When To Plant Milkweed In Southern California

When to plant milkweed in southern california

Growing Instructions: Start California Milkweed seeds outdoors in late November. Pick a location with full sun and prepare soil for good drainage, if needed. Plant seeds 1/8" deep and 18” apart, using 3 seeds per hole. Water once, and then allow the winter rain and/or snow to provide moisture until the spring.

What month do you plant milkweed?

Ideally, the best time to plant milkweed seeds is in the fall so the cold temperatures and moisture that come with winter stimulate germination. You can also plant milkweed in the springtime.

What type of milkweed grows in Southern California?

Asclepias erosa is a species of milkweed known commonly as desert milkweed. It is native to southern California, Arizona, and northern Baja California, where it is most abundant in the desert regions.

Where should you not plant milkweed?

It is not recommended to plant milkweed within 10 miles of the coast in central and northern California where milkweed did not occur historically. Instead, plant a variety of flowers native to your region that provide nectar from early spring through fall to support monarchs and other pollinators.

Can I just scatter milkweed seeds?

You can sow milkweed seeds by scattering them on the soil surface 1/4-1/2 inch apart, and then cover them with about 1/4 inch of additional soil. Water the area frequently after planting until plants become established. Many species need to be vernalized (cold treated) before planting.

Can I plant milkweed seeds in March?

Check Journey North's Migrations Map to find out! I started cold stratifying my Butterfly Milkweed seeds at the beginning of March. 30 days have passed and they are ready to be planted! It is worth noting that cold stratifying your seeds increases germination rates but is not absolutely necessary.

Do milkweed come back every year?

These native milkweed are perennials, meaning they come back year after year. Their aerial parts (flower, leaves, stem) die back but their rootstock remains alive throughout the winter. Cut back milkweed stalks in the late fall or winter, after they have produced seed pods and these seeds have had time to mature.

Will milkweed bloom first year from seed?

In general, milkweed may not flower in the first year of growth, because it is investing its resources in growing a strong root system. Also, if there is excess nitrogen in the soil the plant may not flower, so do not fertilize milkweed.

Where is the best place to plant milkweed plants?

Plant in full sun locations. Soil: There is a Milkweed variety for every landscape. Common Milkweed grows well in average garden soil. Swamp Milkweed, as its name implies, will do best in a moist environment, making it great for wet meadows or rain gardens.

Why is milkweed a problem?

Tropical milkweed becomes a problem when planted in temperate areas where it does not die back in winter. A protozoan parasite of monarch butterflies, Ophryocystis elektroscirrha or OE for short, can travel with monarchs visiting the plants and become deposited on leaves.

Should I plant milkweed in Southern California?

So in the simplest terms, butterfly experts say California native milkweeds, with their pink, white and cream-colored flowers are the only milkweeds we should be planting in Southern California, because they typically go dormant around December (meaning the tops of the plants die back but the roots stay alive), and

What is the best milkweed for monarch butterflies Southern California?

In inland Southern California, Narrow Leaf Milkweed is the Monarch's native host plant, and its flowers also provide nectar. It is a perennial that grows 3-4 ft. high and forms colonies. It grows best in full sun to part shade and is a low to moderate water user.

Why do farmers not like milkweed?

Milkweed has a reputation for encroaching on cropland where it can compete with crops for soil and light. The plant can also create a nuisance on ranchlands, as cattle can be poisoned when poor foraging conditions lead hungry cows to milkweed-concentrated areas as a last resort.

Is milkweed illegal in California?

San Rafael, CA – Nurseries and retail centers in Marin County are now prohibited from selling tropical milkweed, a variety not native to the area and harmful to monarch butterflies.

Will milkweed spread?

Common Milkweed Can Spread Aggressively Anyone in its native range (zones 3 to 8) with space for a wildflower garden can consider common milkweed. But gardeners should be aware that this species is considered very aggressive. It spreads not only by seed but by underground rhizome, and can be very difficult to control.

Should I soak milkweed seeds before planting?

In an effort to improve germination rates, many gardeners place the seeds in packets made from paper towels and soak them in warm water for 24 hours prior to planting.

Should milkweed be planted in clusters?

Grow at least 6 plants together so your monarch caterpillars don't run out of food.

How deep do you bury milkweed seeds?

Sowing Milkweed Seeds is Easy! Seeding can occur between October and June, but should not be completed during the summer months. Once the seed is broadcast, work the seed into the soil to a depth of 1/8th inch. This can be accomplished by flipping over a garden rake and lightly moving the seed and the soil/mulch.

Can I plant milkweed seeds in February?

Earlier start dates are recommended for those further south, since freezing temps are in shorter supply. I've started milkweed seeds inside before with less than one month of 'refrigerator' cold stratification. Starting seeds by February should be more than enough time (in most regions) to create the desired outcome.

How long does it take milkweed to grow from seed?

Wait - Place in a sunny window, in a greenhouse, or under a grow light. Cold-stratified Milkweed seeds should germinate and sprout within 10-15 days after planting.

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