50 Swamp Milkweed (Asclepias incarnata) Seeds for North America – Free Shipping


Create a sanctuary that celebrates. Bring the beauty of Swamp Milkweed to your garden with Johnny Butterflyseed’s Premium Swamp Milkweed Seeds.

85 in stock (can be backordered)

SKU: 50SWAMPMILKWEED Categories: ,


Discover the Wonders of Swamp Milkweed: A Butterfly’s Delight

Dive into the enchanting world of gardening with Johnny Butterflyseed’s carefully selected Swamp Milkweed (Asclepias incarnata) seeds, a must-have for every Monarch Butterfly enthusiast’s garden. Sourced from the lush landscapes of New England, our seeds boast an impressive 86% germination rate, ensuring a lush, vibrant display in your outdoor space.

Product Features

Quantity: 50 seeds per packet, perfect for creating a captivating garden oasis.
USDA Zones Compatibility: Ideal for Zones 3-9, our Swamp Milkweed seeds are versatile and resilient, adapting to a variety of climates with ease.
Native Range: Proudly native to all but the westernmost states, including Puerto Rico and a significant portion of Canada, supporting local ecosystems and attracting pollinators.
Germination Rate: An exceptional 86% germination rate in our latest trials, promising robust growth and vitality.

Germination Instructions

1. Cold Stratification: For best results, seeds like cold stratification. Mix seeds with moist sand and store in a sealed bag in your refrigerator for 30 days before planting.
2. Sowing: After stratification, sow seeds 1/4 inch deep in a seed starting mix. Keep soil moist but not waterlogged.
3. Germination: Expect sprouts in 10-20 days at 70°F. Ensure adequate light and moisture during this critical phase.

Planting Instructions

Location: Choose a sunny spot for planting, as Swamp Milkweed thrives in full to partial sunlight. In Zone 9, however, opt for a location that provides ample afternoon shade to protect plants from intense heat.
Soil: Prefers moist, well-drained soil. Tolerant of wet conditions, making it ideal for water garden edges or low-lying areas.
Spacing: Plant seedlings or direct-sow seeds 18-24 inches apart to allow for mature growth.
Watering: Keep soil consistently moist throughout the growing season, especially during dry spells.

Gardening Tip: In Zone 9, where the sun’s embrace is warmer, providing your Swamp Milkweed with a bit of shade will ensure it thrives without the scorch of direct, all-day sunlight. Not recommended for Zone 10 due to heat sensitivity.

Florida Native Seeds

For those in warmer climates, consider our Florida Native Seeds collection, originating in Zone 9 and bred for superior heat resistance. A perfect complement to your garden, these varieties offer resilience and beauty in the face of high temperatures.

Bring the beauty of Swamp Milkweed to your garden and enjoy the ballet of butterflies and pollinators it attracts. With Johnny Butterflyseed’s Premium Swamp Milkweed Seeds, create a sanctuary that celebrates the harmony of nature right in your backyard. Happy planting!

Additional information

Dimensions4.5 × 3.25 × .02 in


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