How to grow Butterfly weed 'Clay'
Clay likes a position of full sun and remember to water very sparingly. Keep in mind when planting that Clay is thought of as hardy, so this plant will survive close to or on freezing temperatures. Ensure your soil is sandy and loamy and has a ph of between 4.8 and 6.8 as Butterfly weed is a moderately acidic soil to weakly acidic soil loving plant.
Growing Clay from seed
Soil temperature should be kept higher than 18°C / 64°F to ensure good germination.
Transplanting Clay
Ensure that temperatures are mild and all chance of frost has passed before planting out, as Clay is a hardy plant.
Harvesting Clay
This variety tends to be ready for harvesting by early summer.
During WWII the silky part attached to the seeds was used for life jackets. Milkweed is more bouyant then cork by 5 or 6 fold.
Footnotes