
Astilbe 'Radius'
Astilbe 'Radius' is an amazing plant species that adds a splash of colour to any garden. It produces striking red-purple flowers from mid-summer onwards and is particularly effective when planted in a bold, clumping style. It grows well in light, dappled shade and moist soil. This hardy, clump forming perennial is low maintenance and when established requires almost no attention. Deer and rabbit resistant, it should be a star in any garden setting, providing months of colour and enjoyment.
Sunlight
Shade
Water Needs
medium
Green areas show climates worldwide where this plant can grow.
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Water Every
"3-4" days
Sun Needs
shade
Growth
Low
Care Level
Low
💧 Water every "3-4" 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!
Divide root ball in spring, replant sections immediately
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
Start seeds indoors 6-8 weeks before last frost date
Join scion to rootstock, bind securely until healed
Good For:
Consider Carefully:
Prefers less than 3 hours of direct sunlight. Perfect for north-facing areas or under trees.
Keep soil consistently moist but not waterlogged. Water when top inch of soil is dry.