Butterfly Weed Seeds

Plant Butterfly Bush Milkweed Seeds or Asclepias tuberosa tubers, to grow butterfly weed in the organic flower garden for flowers that attract butterflies. An excellent choice for its vividly orange blooms, these easy-to-grow, long blooming natives make lovely cut flowers and are magnets for butterflies, particularly Monarchs. Crown-shaped flowers form clusters up to 2" across. In the fall, upright pods crac Asclepias tuberosa (Butterfly Weed) milkweed has attractive, bright orange flowers in late spring and is a nectar source for bees and butterflies.

Butterfly Bush Milkweed Seeds

Butterfly Bush Milkweed seeds, sometimes called Orange Milkweed, is a hearty perennial intensely attractive to butterflies and other beneficial garden insects. It is highly drought resistant, so useful for xeriscaping. Read More

West Coast Seeds ships anywhere in North America. However, we are not able to ship garlic, potatoes, asparagus crowns, bulbs, onion sets, Mason bee cocoons, or nematodes outside of Canada. We regret, we cannot accept returns or damages for orders outside of Canada. The minimum shipping charge to the US is $6.99.

West Coast Seeds ships anywhere in North America. However, we are not able to ship garlic, potatoes, asparagus crowns, bulbs, onion sets, Mason bee cocoons, or nematodes outside of Canada. We regret, we cannot accept returns or damages for orders outside of Canada. The minimum shipping charge to the US is $6.99.

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More details about Butterfly Bush Milkweed Seeds

Asclepias tuberosa. Butterfly Bush Milkweed seeds, sometimes called Orange Milkweed, is a hearty perennial intensely attractive to butterflies and other beneficial garden insects. It is highly drought resistant, so useful for xeriscaping. Unlike other members of the Milkweed family, Butterfly Weed does not issue a milky sap when broken. Waxy green stems to 70cm (27″) tall are topped by vivid orange flower clusters. Grown in small clusters, this plant attracts butterflies like no other, even in urban gardens. Flowers are followed by exotic looking fruits that release easy-to-harvest seeds. All milkweeds are useful, nectar rich food plants for butterflies, including the Monarch butterfly.

This is not the milkweed species that is used as a food plant by the Monarch caterpillar. That plant is A. incarnata, or Swamp Milkweed.

NOTE: All parts of the plant are harmful if swallowed. Asclepias leaves can be toxic to chickens, so plant out of range of foraging flocks.

Quick Facts:

    • Perennial
    • Vivid orange flower clusters
    • Waxy green stems to 70cm (27″) tall
    • Attracts butterflies
    • Non-invasive species

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    Asclepias tuberosa, Butterfly Weed

    An excellent choice for its vividly orange blooms, these easy-to-grow, long blooming natives make lovely cut flowers and are magnets for butterflies, particularly Monarchs. Crown-shaped flowers form clusters up to 2″ across. In the fall, upright pods crack open, releasing seeds glistening with silky hairs. This butterfly milkweed is perfect in meadows, wildflower gardens and as dried pods in arrangements. Sow outdoors in spring after last frost or in late summer.

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    Butterfly Weed Seeds (Asclepias)

    Asclepias tuberosa (Butterfly Weed) milkweed has attractive, bright orange flowers in late spring and is a favorite nectar source for bees and butterflies.

    USDA Hardiness Planting Zones

    To determine if a plant is sufficiently cold hardy, the USDA created numbered zones indicating winter low temperatures; the lower the zone number the colder the winter.

    • If the coldest winter temperature expected in your area is -15°F (zone 5) then any plants rated zones 3-5 will survive the winter temperatures in your area.
    • If you live in very warm winter areas (zones 9-11) plants with zones 3-4 ratings are not recommended. The lack of freezing winter temperatures do not provide a time for winter dormancy (rest).

    Find Your Planting Zone:

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    Asclepias (Milkweed) are sun loving plants that are essential perennials for monarch butterflies providing food for caterpillars and nectar for adult butterflies. They bloom from mid-summer into early fall and, with their milky sap, are resistant to rabbits and deer.

    Asclepias can be divided into two groups for plant care; Asclepias tuberosa with orange (sometimes yellow) flowers and all the other species with pink (sometimes white) flowers.

    Planting Milkweed Seeds:

    Milkweed (Asclepias) seeds germinate best under warm soil conditions. The seeds need a cold, dormant period, known as stratification, to germinate.

    They can be successfully seeded outdoors in fall in areas that received frost, for spring germination. For mid to late spring planting, all species (A. tuberosa, A. syriaca, A. sullivantii, A. incarnata) will also germinate moderately well when seeded into warm ground after being stratified (chilled).

    Dry stratification is done by placing dry seed in the refrigerator for 30 or more days. A more effective strategy is to moist stratify them by mixing seed with moist (not soggy) sand in a zip-lock plastic bag and place them in the refrigerator for 30 days. After 30 days of cold moist storage, the seed’s natural chemical germination inhibitors have dissipated and are ready to sprout.

      Asclepias tuberosa (Orange Butterfly Weed) – this perennial stays dormant until later in the spring than many other plants, especially when grown in pots. It’s fine to plant dormant plants; don’t up-pot them for planting later in the growing season.

    Preferred growing conditions:

    1. Need sandy or gravelly soils (except the Clay form which does well in heavier soils including dry clay.)
    2. Does best with gravel mulches.
    3. After their second growing season, only requires deep but infrequent watering. Plant in full hot sun.
    4. Just a few handfuls of compost and Yum Yum Mix added to the planting hole is enough. Don’t plant into a rich, highly-amended soil.

    Special comments:

    • When planting dormant plants, water thoroughly after planting and wait to water again until the plant comes into active growth, at which time a deep watering every week or so is adequate. Take care not to overwater young transplants.
    • Asclepias has a long, carrot-like tap root that should remain undisturbed after planting and should NOT ever be divided.

    Preferred growing conditions:

    1. These species grow in a wide range of soil types, including clay.
    2. They don’t need mulching (except in very hot climates).
    3. These are moisture-loving perennials and do well in wet to moderately moist soil conditions.
    4. Plant in full to part sun areas.
    5. They like compost enriched soils at planting time.

    Special comments:

    • Asclepias syriaca and A. speciosa will spread to make big patches of plants and are best planted in parts of the landscape where they won’t crowd out less vigorous plants. Not recommended for the prime spots in your perennial beds.
    • Asclepias incarnata (Swamp Milkweed) is a more refined grower and is fine to include in perennial beds.

    Oftentimes, Milkweeds won’t grow much their first season in the ground, so be patient. They are establishing their root system and crown. By the second growing season, the plants will begin to get bigger and look more robust. Asclepias species are an odd bunch and don’t behave like many other more familiar perennials. So be patient and accept their quirky nature.

    Garden care:

    1. Fertilize Asclepias just once in fall with Yum Yum Mix and Planters II. – Naturalized plantings don’t need additional fertilization.
    2. To encourage re-seeding and provide winter interest with their ornamental seed pods, leave the stems intact over the winter. In mid-spring, remove old stems just above ground level.
    3. All species of Asclepias are late to emerge in the spring, so don’t be concerned if other perennials come up first and they remain dormant.

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