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Balloon Cotton Bush Plant
The balloon cotton bush (Gomphocarpus physocarpus), also known as swan plant, balloon plant, or hairy balls, is a fascinating species in the milkweed family (Apocynaceae). Here’s a quick rundown of key info: Botanical Details • Scientific name: Gomphocarpus physocarpus (formerly classified as Asclepias physocarpa) • Common names: Balloon plant, balloon cotton bush, hairy balls, swan plant • Origin: Native to southeast Africa • Type: Perennial in warm climates, but often grown as an annual in cooler regions Appearance • Height: Typically grows 3–6 feet tall (up to 2 meters) • Leaves: Narrow, lance-shaped green leaves • Flowers: Small, white star-shaped flowers bloom in clusters—very attractive to pollinators • Fruit: The most notable feature—large, inflated, round seed pods covered in soft spines. These balloon-like pods start green and turn tan as they mature. Ecological Role • Monarch host plant: It’s a host plant for monarch butterfly larvae, like other milkweeds. Monarch caterpillars feed on the
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