- Species and varieties: Asclepias syriaca, commonly known as common milkweed, is a species of flowering plant in the dogbane family, Apocynaceae. It is native to North America and is known for its pink to purplish flowers. There are several varieties of Asclepias syriaca, but the most common one is the pink-flowered variety.
- Hybrid or heirloom: Asclepias syriaca is typically considered an heirloom variety. It is not commonly hybridized, and most seeds available are open-pollinated, preserving the genetic diversity of the species.
- Pruning and training: Pruning is not typically necessary for Asclepias syriaca. However, deadheading spent flowers can encourage additional 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 does not have high fertilization needs. It can benefit from a light application of compost or a balanced, slow-release fertilizer in the spring. 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. It is a hardy plant that can tolerate a wide range of temperatures and conditions.
- Climate requirements: Common milkweed thrives in full sun and well-drained soil. It is drought-tolerant once established and can grow in a variety of soil types, including sandy, loamy, and clay soils. It prefers a temperate climate but can adapt to different environmental conditions.