I just recently planted 5 astilbe plants in the garden. I live in the Toronto Beach area and these plants are planted in a semi shaded area and receive water every other day via a water sprinkling system. How do astilbe plants multiply?
Astilbe produces an attractive mound of glossy, fernlike foliage topped with delicate plumes of colorful flowers.
They grow best in a site with light to full shade and moist, humus-rich soil. Astilbes may tolerate full sun as long as the soil remains consistently moist.
Astilbes multiply rapidly. They grow in clumps that have separate root systems called ‘divisions’. These can (and should) be pulled apart and replanted to form new large plants. Divide plants every 3 to 4 years as new growth begins in the spring, lifting plants and dividing them into clumps.
For best results with Astilbe plants there are four key things to remember:
1) Astilbe are heavy feeders- They require a high nitrogen fertilizer in the spring, either from composted manures or fertilizers such as a 20-10-10. Make sure to follow directions carefully.
2) Summer drought is their worst enemy- make sure to keep plants well watered during the months of July and August
3) Make sure they are situated in a well drained site. Do not cut back Astilbe for the winter, but prune in early spring. The old foliage may help protect the plant from winter damage.
4) Astilbe should be divided every 3-4 years to maintain vigour.
Here’s to continue enjoyment of these beautiful perennials.