Parkinsonia aculeata (Jerusalem Thorn)

Botanical name: Parkinsonia aculeata

Common name: Jerusalem Thorn

Subfamily: Caesalpinioideae

Origin: West Indies and South America

Hardiness: 15°F

Plant attracts butterflies, hummingbirds

Parkinsonia aculeata (Jerusalem Thorn) is a fast-growing deciduous shrub or small tree native to the West Indies and South America. It forms a graceful, airy canopy with long, arching branches lined with delicate bipinnately compound leaves, creating a fine-textured, feathery look. Bright yellow flowers with orange-tinged throats appear in late spring and summer, attracting pollinators with their vibrant color and light fragrance.

This drought-tolerant species thrives in full sun and poor, dry soils, making it ideal for xeriscaping or arid gardens. It can reach 15 to 20 feet tall and often develops a weeping habit. Spiny branches provide some protection from browsing animals. The plant is hardy to around 15°F and may survive even lower temperatures with protection, especially in dry winter climates.

Parkinsonia aculeata can be grown in large containers when young but is best suited to open ground in warm regions. It is not considered edible and should be handled with care due to its sharp thorns. Its graceful appearance and ability to thrive in difficult conditions make it a valuable addition to dry landscape designs.