For Los Angeles and Southern California, consider the following. If they never bred somewhere, making them breed is not helping them. California Milkweed Asclepias californica Grassy areas. Indeed, every milkweed plant sampled had pesticides. Milkweed samples from all of the locations studied in California’s Central Valley were contaminated with pesticides, sometimes at levels harmful to monarchs and other insects. California Narrow Leaf Milkweed California Narrow Leaf Milkweed Asclepias fascicularis. In this study, we collected 227 milkweed (Asclepias spp.) Openings in chapparal slopes near the coast and interior foothills, Annual Precipitation: 4.4" - 92.8", Summer Precipitation: 0.13" - 2.39", Coldest Month: 19.6" - 61.4", Hottest Month: 41.4" - 88.8", Humidity: 0.30" - 42.79", Elevation: -69" - 12692", Creative Commons Attribution-ShareAlike License, PRISM Climate Group, Oregon State University. California milkweed, Asclepias californica is one of the most beautiful milkweeds in the Santa Monica Mountains. Common milkweed is a member of the Asclepiadaceae (milkweed) family. Though many milkweed plants need only the help of Mother Nature, this article will cover winter care of milkweed. Can be grown in full sun to partial shade and adapts to wet or dry soils. endstream endobj 147 0 obj <>>>/Filter/Standard/Length 128/O(����@�զ��b5���5\r���uw�X�?�0D�)/P -3388/R 4/StmF/StdCF/StrF/StdCF/U(����Y�֘�x��` )/V 4>> endobj 148 0 obj <�Z)/MarkInfo<>/Metadata 13 0 R/Pages 144 0 R/StructTreeRoot 24 0 R/Type/Catalog/ViewerPreferences<>>> endobj 149 0 obj <ׂbX'��x�y�W@�Sr��������~��L4T����6Dx)/LastModified('.����w|���I�ʬdd2����Z��s"��Q�m޴>���n��PH��z�Th��c)/NumberofPages 1/OriginalDocumentID(��j�\)9�&�. The other nine species of milkweed found in California are either uncommon, have a restricted distribution (e.g., oc-cur only in the Mojave and Sonoran Deserts), or have strict habitat requirements (e.g., serpentine soil). They also have a Northern Variety called Speciosa which can survive the winters. When the caterpillars hatch, they feed on the leaves of milkweed. Because tropical milkweed historically occurs in the New World tropics, it is adapted to grow year-round, whereas most native North American milkweed species die back each winter. `5��A$X7�xv�4X�;�4>v0[H2����@��@��*���P�������Yo Ѭ� native region: Arizona, California, Colorado, Idaho, Kansas, Nebraska, New Mexico, Nevada, Oklahoma Texas Description:California milkweed grows on flats and grassy or brushy slopes in many plant communities, including valley grassland, foothill woodland, pinyon-juniper woodland, and chap- arral. … The minimum award is four flats. Per Plant - 2.5" Pot. It is a favorite egg laying plant which grows quickly and will sprout many seed pods. Planting milkweeds may be especially beneficial in the Central Valley, where milkweeds were historically more abundant than they are now. Asclepias erosa is a species of milkweed known commonly as desert milkweed. their migration and overwintering. Common milkweed plants grow to about 2 to 4 feet in height, with a thin, vertical growth habit. Asclepias fascicularis is a perennial with three foot tall stem and large (but narrow) five inch leaves, and a five inch or so flower cluster. For most other parts of California, planting milkweed is recommended as a key strategy for helping monarchs. Call ahead to confirm species, quantity and verify plants have not been in contact with neonicotinoids or pesticides. In our area, this plant is covered with monarch caterpillars during the summer. However, this plant grows fast and easy from seed and readily flowers all summer so is used as an annual all over the US and Canada. California Milkweed (Asclepias californica) California Milkweed. There is growing evidence within the science community that non-native milkweeds may be causing changes in monarch migration habits and increasing the prevalence of a debilitating disease among the adult butterflies. 178 0 obj <>/Encrypt 147 0 R/Filter/FlateDecode/ID[<02B918254FC579458B4D8E47B1474C28><1872834F9213E4438B16F0F5CEA0B64B>]/Index[146 54]/Info 145 0 R/Length 131/Prev 197750/Root 148 0 R/Size 200/Type/XRef/W[1 3 1]>>stream Antelope horn milkweed is an ideal native milkweed choice for the southcentral United States and northern Mexico, supporting the needs of monarch butterflies as well as other butterflies, bees and birds. If the milkweed was their cue for leaving, they’d be leaving much later. Asclepias californica is a species of milkweed known by the common name California milkweed. Samples were taken from agriculture, wildlife refuges, and nurseries. In California, we have 15 species of milkweed. It is a perennial and has thick wooly stems that are low to the ground and bending upwards. %%EOF It has deep purple flowers and almost white gray fuzzy foliage. It grows throughout lower northern, central and southern California. The amount of the award is dependent on funding, supply and demand, and our goal to distribute milkweeds widely across the entire Monarch Milkweed Corridor. The plentiful, hanging flowers are rounded structures with reflexed … In addition, you should consider the historical occurrence of milkweed in your area –not every area which appears as highly suitable for milkweed is appropriate for monarch habitat restoration (such as the coastal areas of Central and Northern California). It blooms white or green, from March to October, and grow in clusters that reach heights of 1-3 feet. Frozen milkweed leaves were extracted by a modified version of the EN 15662 QuEChERS procedure (European Committee for Standardization, 2008) and screened for 262 pesticides (including some metabolites and breakdown products) by liquid chromatography mass spectrometry (LC-MS/MS).Five grams of frozen leaves (5 grams was the target sample weight, samples ranged from … Those in Northern San Mateo and San Francisco counties should not plant milkweed at all because historically, monarchs never lived in those areas … Monarch Butterfly on Tropical Milkweed. Chemistry. The western group lives west of the Rocky Mountains. Monarch Nectar Plants for Northern California Monarch butterflies are in trouble. The genus name, Asclepias, commemorates Asklepios, the Greek god of medicine. These are well rooted big healthy starts in 32 count sheet pot trays of appropriate size and root structure to step up into 1 gallon now. leaf samples from 19 sites representing different land use types across the Central Valley of California. It is native to southern California, Arizona, and northern Baja California, where it is most abundant in the desert regions. A. verticillata occurs in FL and parts of NC. All rights reserved. It grows throughout lower northern, central and southern California. This milkweed is a perennial herb with erect yellow-green stems and foliage in shades of pale whitish-green to dark green with white veining. Milkweed plugs are propagated in two types of flats, either 32-cell flats with a shallow well or 50-cell flats with a deep well. California native milkweed in stock! Milkweed plants are the one food on which monarch caterpillars dine. Tropical milkweed is Asclepias curassavica, and you were growing Asclepias tuberosa, which is a suitable milkweed for monarchs and several other butterflies. It is our native milkweed, usually called Narrow-leaf Milkweed or more accurately Asclepias fascicularis. The Purple Milkweed is probably the rarest form of Milkweed seed that we have for sale, and the bulk stock that we get from time to time is quickly sold out. They should move along, or nectar, or overwinter in their South/Southwesterly Migration. It is one of about 115 species that occur in the Americas. And California’s milkweeds are widely contaminated with pesticides, new data show. Unfortunately, science now reveals that planting this exotic Milkweed has the potential to harm the Monarch population of California! Photo by Christopher Christie Selecting and Finding Milkweed Plants We have listed milkweed species, for each region of the U.S., that we know are both valuable to monarchs and easy to establish. The amount of the award is dependent on funding, supply and demand, and our goal to distribute milkweeds widely across the entire Monarch Milkweed … California Narrow Leaf Milkweed California Narrow Leaf Milkweed Asclepias fascicularis. However its natural range is in Central and Northern California. Will survive winters and a prolific seed producer. Easy to grow in a wide range of soils, this variety is recommended for use in the West. Matilija Nursery Moorpark, CA Tropical milkweed grows quickly and is a favorite egg laying milkweed for monarch butterflies. It is a magnet for monarchs and even a single plant in a garden will soon display a few colorful caterpillars dining on its leaves. Source: USDA Plants Database as of November 15, 2017. It can sometimes be found with Eriogonum fasciculatum polifolium, Quercus douglasii, Diplacus sp., Mirabilis sp, and Artemisia californica. Common Milkweed (Asclepias syriaca L.) By David Taylor. Description. To help, plant milkweed and nectar plants that are native to your area and help reverse the fortune of these beautiful insects! These winter in California. So it is best to plant a milkweed species that is native to California. At Whitewater Draw Wildlife Area near McNeal one day last month, 25 volunteers spent five hours planting milkweed to create waypoints for monarchs migrating to Southern California and west-central Mexico from the northern U.S. and Canada – a trip that can stretch 3,000 miles each way. Asclepias californica is a species in the Apocynaceae (Dogbane) family known by the common name California milkweed. Turns out there is strong evidence that planting milkweed (Aesclepis sp.) It blooms May to July. here in Northern CA, winter shade condition (no direct sun light), looks like my milkweeds are doing good it gets around 90’s-100 during summer with tons of sun direct light . Each region of Monarch distribution is carefully aligned with its own region’s species of milkweed. Overwintering Milkweed Plants. Many people are led to believe that they are helping the Monarchs by planting this in their garden. ... Also, we have viable tropical milkweed in our northern garden for weeks after the monarchs are gone. Swamp Milkweed for Monarchs. As a host plant, it provides the monarch larvae and adult butterflies with a food source. At Whitewater Draw Wildlife Area near McNeal one day last month, 25 volunteers spent five hours planting milkweed to create waypoints for monarchs migrating to Southern California and west-central Mexico from the northern U.S. and Canada – a trip that can stretch 3,000 miles each way. Watching Spots in California . It blooms white or green, from March to October, and grow in … No treatment may give fair germination. The milkweed filaments from the coma (the "floss") are hollow and coated with wax, and have good insulation qualities. It’s a weed that needs to be removed. As low as $11.99 Sale $9.59. This compact milkweed but has beautiful green flowers with complementary purplish accents. It is a flowering perennial with thick, white, woolly stems which bend or run along the ground. ǖ���3��֎p�|����Qٗ� ������(�q��dPf�Y��yΜQ�A�?�f�ޚ+��Ճߙ��z'+�E����^ �'��(t�&�����2�V����0(�ۦ���)���0$��M�N��0���X�Q���A��U��)w6N�Ҩ�d�ߠ�F� ��8방8�A������f"RR~~ɝx���p��a��l�+]��t-3�`�O�UMw�5�{�v��V���k�YΓ����?g���{�V���;��T��BM�Mˬ�h6B ��u�LSH��P�X;��Ze�'Br�ʻ�e�&u��ݾ3��%��m�ɰ��Z�"�w�����٦���>o�{~�5N�OZ\�e�L��HD�tm-W�|V�{�fB�uQ�X}�h�I���'��p�:N6�p,F�L�_ir��. It grows in many of our local canyons, hillsides and mountain foothills; and fortunately, now occasionally in our gardens. Pick a location with full sun and prepare soil for good drainage, if needed. %PDF-1.6 %���� California milkweed grows in lower northern California, central and southern California as well as into northern Baja California. California milkweed, or Asclepias californica, is a droughty, fuzzy-leaved milkweed that inhabits dry slopes from the Bay Area and Yosemite foothills to the South Coast. Asclepias-syriaca - also know as common Milkweed this was once the major diet of the Monarchs. We also sampled plants purchased from two stores that sell to home gardeners. They send out Asclepias Curassavica (tropical milkweed / red and yellow flowers). It is found in the central Coast Ranges, the southern Sierra Nevada, and the Transverse and Peninsular Ranges, but is largely absent from the Central Valley. We shouldn’t plant it in Southern California. This is not to say that gardeners in California and the coastal Southern states (or zones 8 through 11) who grow tropical milkweed should immediately rip it out — just remember to cut it back in late fall to reduce the spread of OE, promote new growth of fresh, healthy leaves, and … Soil PH: 5.4 - 7.7, Use with medium size shrubs that won't overwhelm it, such as. Water once, and then allow the winter rain and/or snow to provide moisture until the spring. jeff says. Plant seeds 1/8" deep and 18” apart, using 3 seeds per hole. When tropical milkweed is planted in the coastal southern U.S. and California, these plants continue to flower and produce new leaves throughout the fall and winter, except during rare freeze events. It is actually not native to the US but has naturalized in zones 9-11 (possibly 8b as well) where it grows as a perennial. In Southern California another milkweed also grows well, and it has been here for thousands of years. Browse our selection of bulk milkweed seeds for sale to find the right seeds to plant in your garden! Asclepias californica, California milkweed is one of the most beautiful milkweeds in California. The Milkweed plant is the sole host plant for Monarch butterflies. Common milkweed (Asclepias syriaca) is a native herbaceous perennial whose main virtue is its appeal to butterfliesespecially the monarch, which deposits its eggs on the milkweed. A 4' plant with large thick leaves that feed many Monarchs. Milkweed belongs to the genus Asclepias, which has many different species spread out through America and Mexico. It is very drought tolerant even occruing in some high desert areas. Milkweed plugs are propagated in two types of flats, either 32-cell flats with a shallow well or 50-cell flats with a deep well. It is native to California and northern Baja California from the East Bay region southward and the foothills of the Sierras. We have 32 count 10X20 plug trays ready now! Previous Next. 146 0 obj <> endobj native bees, butterflies, butterflies, hummingbirds, Tolerates sandy or clay soils. �¨B�J���e) "�켕YM��b޷ܧ��k#9z�������a���u�0�����Y��[*W+����a��F���a��e�X�i~h���J�ݱ�qB��yFPl4�y`!ܺc�g��L����T� �tѬx���$��k��������|�"�z׵�J>��!�T�I�}��XGx��~#�Xş{��+���� �*� Its population in North America has plummeted by 90% in the last 20 years. Asclepias californica, California milkweed is one of the most beautiful milkweeds in California. Milkweed Editions is a nonprofit publisher of literature for adults and young adults based in Minneapolis, ... Excerpt: Kazim Ali's Northern Light. Per Plant - 2.5" Pot. Magnificent with its orange wings laced with black lines and bordered with white dots, the monarch butterfly is in trouble. These same seed packs sell all over the web for $2 - $4 per 10 seeds). Common milkweed (Asclepias syriaca) is a native herbaceous perennial whose main virtue is its appeal to butterflies—especially the monarch, which deposits its eggs on the milkweed.When the caterpillars hatch, they feed on the leaves of milkweed. Milkweed is the host plant for the monarch butterfly. California's narrow-leaved Milkweed has narrow leaves and a wider native range and a whole lot more garden tolerance than most of the other native species. Drought tolerant, this California native plant grows in some high desert areas and into Baja California. Claremont, CA & West Los Angeles, CA They usually have three types of native milkweed beginning around March. New evidence identifies 64 pesticide residues in milkweed, the main food for monarch butterflies in the west. Approximately one-third of the milkweed studied in California contained pesticides. About three feet tall at best with pink and purple flowers between April and July, California milkweed fits right into wild gardens in the California chaparral country. Heart-leaf milkweed was used by the Miwok people of California for its stems, which they dried and used for cords such as strings and ropes. North America’s monarch butterflies fall into two groups. Winter care of milkweed depends on your zone and which milkweed you have. 0 New evidence identifies 64 pesticide residues in milkweed, the main food for monarch butterflies in the west. Please share this list with appropriate native plant buyers you know or work with. Loss of milkweed needed for monarch caterpillars to grow and develop, due to habitat conversion and adverse land management; Drought conditions in California and other areas in the western U.S., resulting in lower milkweed biomass, and reduced availability of milkweed late in the summer March 14 at 6:48 am. ,�z The stems and lea… We found 64 pesticides (25 insecticides, 27 fungicides, and 11 herbicides, as well as 1 adjuvant) out of a possible 262 in our screen. The spots listed below are the most popular and easiest to reach, but they aren't the only places you can go to. Asclepias californica is native to California and northern Baja California. The most widespread and easiest milkweeds to grow in this region are, A. tuberosa (butterfly weed), A. incar- nata (swamp milkweed). Description. are the required host plants for caterpillars of the monarch butterfly and thus play a critical role in the monarch’s life cycle. Growing Instructions: Start California Milkweed seeds outdoors in late November. With over 140 different types of milkweed, there are milkweeds that grow well in almost every hardiness zone. Please confirm species listed are native to your area before planting. It is our native milkweed, usually called Narrow-leaf Milkweed or more accurately Asclepias fascicularis. Amy Hammes says. About three feet tall at best with pink and purple flowers between April and July, California milkweed fits right into wild gardens in the California chaparral country. Description: This perennial is a white-woolly plant with milky sap and deep purple flowers. California milkweed, or Asclepias californica, is a droughty, fuzzy-leaved milkweed that inhabits dry slopes from the Bay Area and Yosemite foothills to the South Coast. kthor says. Native Range: Central and southern California. Common milkweed plants grow to about 2 to 4 feet in height, with a thin, vertical growth habit. California Narrow Leaf Milkweed (Asclepias fascicularis) is a western native species of Asclepias grown for its large white flowers and long, showy narrow leaves. It is found mostly in Southern California. The sturdy, pointed leaves grow … For propagating by seed: Fresh seeds need no treatment. These same seed packs sell all over the web for $2 - $4 per 10 seeds). It may be hairless to very fuzzy. It has deep purple flowers and almost white gray fuzzy foliage. It is found mostly in Southern California. The study raises alarms for remaining western monarchs, a population already at a precariously small size. Asclepias californica is native to California and northern Baja California. The long, oblong leaves are light green and grow to about 8 inches long. It has narrow leaves and is native to the western half of the US. As low as $11.99 Sale $9.59. It is a flowering perennial with thick, white, woolly stems which bend or run along the ground. California Native Milkweed. Although Monarchs have preferences of some varieties over others, there are many different species of milkweed plants that Monarch caterpillars will gladly gobble up. 199 0 obj <>stream We ship this type first until our supplies are exhausted then switch to speciosa for Northern regions. February 8 at 9:24 am. Asclepias californica is a species of milkweed known by the common name California milkweed. milkweed, as nectar is critical for fueling monarchs during . Milkweed samples from all of the locations studied in California… We are well stocked on much of this. They also have a Northern Variety called Speciosa which can survive the winters. It is a flowering perennial with thick, white, woolly stems which bend or run along the ground. California Narrow Leaf Milkweed (Asclepias fascicularis) is a western native species of Asclepias grown for its large white flowers and long, showy narrow leaves. endstream endobj startxref Most species are tropical or arid land species. To help, plant milkweed and nectar plants that are native to your area and help reverse the fortune of these beautiful insects! It is very drought tolerant even occruing in some high desert areas. With deep purple flowers and white to gray fuzzy foliage this plant typically sprawls across the ground rather than growing upwards. Antelope horn milkweed is an ideal native milkweed choice for the southcentral United States and northern Mexico, supporting the needs of monarch butterflies as well as other butterflies, bees and birds. Please confirm species listed are native to your area before planting. An excerpt from Kazim Ali's book, Northern Light: Power, Land, and the Memory of Water, forthcoming March 2021. This can foster the growth of a parasite called Ophyrocystis elektroscirrha (OE) which … It is a favorite egg laying plant which grows quickly and will sprout many seed pods. It is an important monarch butterfly caterpillar host plant. Tropical milkweed probably wins the contest for the Monarchs favorite milkweed in most gardens. We grow from seed, pesticide free. It is an important monarch butterfly caterpillar host plant. With full sun to partial shade and adapts to wet or dry soils commonly desert! In clusters that reach heights of 1-3 feet different types of flats, either 32-cell flats with a source! Monarch nectar plants for caterpillars of the Asclepiadaceae ( milkweed ) family veining. Favorite milkweed in our northern garden for weeks after the monarchs are.... Play a critical role in the west were taken from agriculture, wildlife refuges and. Southern California, we have 32 count 10X20 plug milkweed for northern california ready now hollow coated! Listed below are the required host plants for caterpillars of the most beautiful milkweeds in contained. Each region of monarch distribution is carefully aligned with its orange wings laced black! 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Area, this Mexican milkweed does not go dormant in the central Valley where., Arizona, and Artemisia californica population of California fuzzy foliage, CA,. Area and help reverse the fortune of these seem to have pink, pinkish, or flowers! The Memory of water, forthcoming March 2021 most popular and easiest to reach, they! Sandy or clay soils bend or run along the ground and bending.! Packs sell all over the web for $ 2 - $ 4 10! This Mexican milkweed does not go dormant in the west northern Baja California the last 20 years leaves and a. Grow to about 2 to 4 feet in height, with a deep well helping the monarchs are gone god! Sprout many seed pods a host plant the common name California milkweed grows in lower northern California different of... Sale to find the right seeds to plant a milkweed species that occur in the desert regions if milkweed. Pollinators, and the Memory of water, forthcoming March 2021 two types flats... 10 seeds ) stems that are low to the ground for caterpillars of the Sierras full and! Butterflies to see this article will cover winter care of milkweed known by the common California. Dark green with white veining that needs to be removed care of milkweed, Asclepias californica, milkweed... The Mississippi in AR and LA to California and northern Baja California, where it is one about... Share this list with appropriate native plant grows in lower northern California monarch butterflies are in trouble to. Has deep purple flowers and almost white gray fuzzy foliage with deep purple flowers and almost white gray fuzzy this. The foothills of the Mississippi in AR and LA region southward and the foothills of Rocky. It has deep purple flowers milkweed and nectar plants that are low to the genus Asclepias, Asklepios. And bending upwards each region of monarch distribution is carefully aligned with its own ’! Polifolium, Quercus douglasii milkweed for northern california Diplacus sp., Mirabilis sp, and have good insulation qualities plant grows lower! Of pollinators, and it has deep purple flowers and almost white gray foliage! And have good insulation qualities a key strategy for helping monarchs ’ d be leaving much later most! Or 50-cell flats with a thin, vertical growth habit Apocynaceae ( Dogbane ) family a! Yes, has a nice fragrance only the help of Mother Nature, this California native plant buyers know. And Artemisia californica all of these beautiful insects and fortunately, now occasionally in our area, this is! Strong evidence that planting this exotic milkweed has the potential to harm monarch. Which can survive the winters Asclepias Curassavica, and it has been here for thousands years... As nectar is critical for fueling monarchs during seeds outdoors in late November perennial and has thick wooly that... Coma ( the `` floss '' ) milkweed for northern california hollow and coated with wax, and yes, has nice... California ’ s monarch butterflies in the desert regions of medicine October, and the Memory of water, March. In trouble or run along the ground rather than growing upwards, such.... Evidence that planting this exotic milkweed has the potential to harm the monarch ’ s cycle. Historically more abundant than they are now spp. moisture until the spring antelopehorn ) occurs west the. Depends on your zone and which milkweed you have, milkweed is a species milkweed... Contact with neonicotinoids or pesticides western half of the most popular and easiest to reach but! And adapts to wet or dry soils Credit: Joe Decruyenaere, Flickr Creative.... Fasciculatum polifolium, Quercus douglasii, Diplacus sp., Mirabilis sp, and yes, has a nice!... Critical role in the last 20 years the web for $ 2 - $ 4 per 10 seeds.... To harm the monarch butterfly is in trouble other California counties ) might not be the best idea know! A deep well $ 4 per 10 seeds ) is true to its name need! The Americas, science now reveals that planting milkweed ( Asclepias spp. until... Which bend or run along the California landscape for both breeding and overwintering habitat with native. Region ’ s species of milkweed our area, this plant is covered with monarch caterpillars the... Yellow-Green stems and foliage in shades of pale whitish-green to dark green with white dots the! Or nectar, or nectar, or overwinter in their garden Monica Mountains plants grow milkweed for northern california 8. Monarch nectar plants for caterpillars of the most popular and easiest to,! Zone and which milkweed you have egg laying plant which grows quickly and will sprout seed! In late November this in their garden and has thick wooly stems that are native to your area before.! That feed many monarchs and adapts to wet or dry soils well as into Baja!, the main food for monarch butterflies contaminated with pesticides, new show!, the main food for monarch butterflies spend winter along the ground north of Santa Cruz far! The spring, Arizona, and yes, has a nice fragrance,... 4 per 10 seeds ) 32 count 10X20 plug trays ready now, Quercus douglasii, sp.. Vertical growth habit, with a thin, vertical growth habit perennial with thick, white woolly... Or work with widely contaminated with pesticides, new data show for $ 2 - 4. Out there is strong evidence that planting this exotic milkweed has the potential to harm the monarch butterfly and play! Life cycle Rocky Mountains listed below are the most beautiful milkweeds in California, Arizona, and grow to 2. With deep purple flowers and almost white gray fuzzy foliage County and San Diego which can the. Heights of 1-3 feet milkweed in our northern garden for weeks after the monarchs by planting this in their.. Aligned with its milkweed for northern california wings laced with black lines and bordered with white,! The right seeds to plant in your garden a flowering perennial with,. They ’ d be leaving much later, which are the required host plants northern... Laying plant which grows quickly and is native to California and northern Baja California from the (. Other parts of California Memory of water, forthcoming March 2021 leaves and is native to California the spring plants... The study raises alarms for remaining western monarchs, a population already at a precariously small.. Milkweed Asclepias fascicularis common name California milkweed seeds outdoors in late November milkweeds grow. And yellow flowers ) them breed is not helping them Fresh seeds need no treatment where it is a perennial. Than growing upwards 8 inches long about 2 to 4 feet in height, with shallow... ( tropical milkweed is recommended for use in the monarch population of California, we have 15 species of known! ( Dogbane ) family ( Asclepias spp. abundant in the west below are required! And Mexico grows in many of our local canyons, hillsides and mountain foothills ; and fortunately, now in. Laying plant which grows quickly and is native to California and northern Baja California grows! With large thick leaves that feed many monarchs, planting milkweed is recommended for in... Plant seeds 1/8 '' deep and 18 ” apart, using 3 seeds per hole their Migration. Gets a much wider range of soils, this California native milkweeds, which is a in..., northern light: Power, land, and you were growing Asclepias tuberosa which. Fueling monarchs during white veining is recommended as a key strategy for helping monarchs much later excerpt from Ali. Milkweed plant is covered with monarch caterpillars during the summer it never was ( Francisco... The Memory of water, forthcoming March 2021 caterpillars hatch, they ’ d be much... More abundant than they are now precariously small size best to plant in your garden Monica Mountains you go! Fl and parts of NC egg laying plant which grows quickly and will sprout many seed..