How to grow Butterfly weed 'Hello Yellow'
A full sun position will ensure your plant thrives and remember to water very sparingly. Keep in mind when planting that Hello Yellow 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 Hello Yellow from seed
Soil temperature should be kept higher than 18°C / 64°F to ensure good germination.
Transplanting Hello Yellow
Ensure that temperatures are mild and all chance of frost has passed before planting out, as Hello Yellow is a hardy plant.
Harvesting Hello Yellow
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