- Species and varieties: Asclepias syriaca, commonly known as common milkweed, is a species of flowering plant in the dogbane family, Apocynaceae. While the typical flower color is pink to purplish, there are varieties and cultivars that may exhibit yellowish hues.
- Hybrid or heirloom: Asclepias syriaca is generally considered an heirloom plant, as it is native to North America and has been grown and used for various purposes for centuries. There are no widely recognized hybrid varieties of this species.
- Pruning and training: Pruning is generally not necessary for Asclepias syriaca. However, deadheading spent flowers can encourage more blooms and prevent unwanted self-seeding. If the plant becomes too tall or leggy, it can be cut back to promote bushier growth.
- Fertilization needs: Asclepias syriaca typically does not require much fertilization. If the soil is poor, a light application of a balanced, slow-release fertilizer in the spring can be beneficial. Over-fertilization should be avoided as it can lead to excessive foliage growth at the expense of flowers.
- Hardiness zones: Asclepias syriaca is suitable for USDA hardiness zones 3 through 9.
- Climate requirements: This plant thrives in full sun and can tolerate a range of soil types, including sandy, loamy, and clay soils. It prefers well-drained soil and can withstand drought conditions once established.