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Package of Johnny's Selected Seeds
Package of Johnny's Selected Seeds
Overwintering Varieties FREE STANDARD SHIPPING On Orders Over $200!*
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Disease Resistance:

No disease information found.

Symbols Explained

Greenhouse Performer

Greenhouse Performer

This symbol is assigned to only those varieties that we have found, based on our trials, to be the best performers in a climate-controlled greenhouse environment. These varieties have been selected based on proven vigor and disease resistance to sustain healthy growth through a longer season, high yields to justify the investment in the structure, and excellent flavor and appearance.

Grows Well in Containers

Grows Well in Containers

Variety does well when grown in a container.

Use for Cut Flowers and Bouquets

Use for Cut Flowers and Bouquets

Good variety to choose for fresh cut Flowers displays.

Silky Formula Mix

Silky Formula MixAsclepias Seed


Product ID: 1641

Bred for greenhouse and field production.

Mix consists of Gold and Scarlet. Prefers warm, dry conditions. Attracts butterflies. Also known as milkweed, butterfly weed, blood flower, and sunset flower. Tender perennial in Zones 7-10. Ht. 28-40". Avg. 10,500 seeds/oz. Packet: 50 seeds.

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Quick Facts

Days to Maturity or Bloom:   90

Plant Cycle:   (TP)  

Product Symbols:

Greenhouse Performer   Grows Well in Containers   Use for Cut Flowers and Bouquets  

Shipping Information & Notes

This product cannot be shipped to the following states:HI

CAUTION: The milky sap of this plant may cause irritation in sensitive individuals. Exercise caution when harvesting. The purchaser assumes all liabilities relating to the use of this product.

Perennial in warmer climates.

Growing Information


DAYS TO GERMINATION: 14-21 days at 65-70°F (18-21°C). Stratification for Pleurisy Root only: Moisten,cover with plastic, and refrigerate at 40-50°F (4-10°C) for 7-14 days. After stratification, seeds should be brought into warmer temperatures to germinate.

SOWING: Transplant (recommended): Sow 10-12 weeks before last frost 1/4" deep into a seed starting mix. Begins taproot growth upon germination. Do not allow to become pot bound at any time as plants will deteriorate rapidly. Transplant into cell packs or 3-4" pots 3-5 weeks after sowing. Harden off and transplant outdoors after the last frost.
Direct seed: Can be sown in the fall or spring.


SOIL: Well-drained, sandy loam to poor soil.



HARVEST: Fresh: Harvest when 1/2 to 2/3 of flowers are open on a stem. If stems wilt after harvest, rehydrate in water for 24 hours.

USES: Cut flower. Borders, containers, and butterfly gardens.

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