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Germination of

Asclepias speciosa

Showy Milkweed: Red milkweed, Asclepias speciosa

Asclepias speciosa

Asclepias speciosa seeds require a period of cold stratification before they will germinate. Begin by sowing the seeds in a well-draining soil mix in a pot or seed tray. Place the pot or tray in the refrigerator for 4-6 weeks. After the stratification period is over, move the pot or tray to a warm, bright location and keep the soil moist. The seeds should begin to germinate in 1-3 weeks.

Some of plants may have very have specific germination requirements that may not be covered in these general instructions. 

Many seeds require pre-treatment before sowing which we try to list here when we can, but this information may not be present here.  Germination times and germination temperatures are to be a guide only.  Many factors can DRASTICALLY affect this.


It's always a good idea to research the specific germination requirements from multiple sources for each plant before attempting to grow them from seed.

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