Robinia 'Purple Robe'
Black locust (Robinia 'Purple Robe') is an attractive ornamental tree which produces purple-tinged, sweet smelling flowers. It grows quickly and is hardy, making it suitable for colder climates. It’s also resistant to drought and pests, and doesn’t need pruning - making it a low maintenance option for busy gardeners. It grows up to 12m tall with an equally impressive spread reaching 6m. The bright clusters of flowers attract beneficial insects and birds to your garden, and its deep taproot makes it tolerant of dry soil. This species is ideal for creating a colourful, fragrant focal point in any garden.
Sunlight
Full Sun
Water Needs
low
Green areas show climates worldwide where this plant can grow.
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Water Every
"7-10" days
Sun Needs
full-sun
Growth
High
Care Level
Moderate
💧 Water every "7-10" days
Seasonal Adjustments
Adjust watering frequency based on temperature, humidity, and season. Water more frequently in summer and less in winter.
Pro Tip: Check soil moisture before watering. Stick your finger 1-2 inches into the soil—if it's dry, it's time to water!
Take 4-6" cuttings in spring, root in water or moist soil
Bend stem to soil surface, cover lightly, roots form in 4-6 weeks
Join scion to rootstock, bind securely until healed
Start seeds indoors 6-8 weeks before last frost date
Propagate via Stooling for best results
Good For:
Consider Carefully:
Toxicity Level
moderateNeeds at least 6 hours of direct sunlight daily. Place in the sunniest spot in your garden.
Allow soil to dry out between waterings. Overwatering can cause root rot.
Plant in early spring or fall for best results. Blooms in spring.