Persicaria amplexicaulis Speciosa
Knotweed Persicaria amplexicaulis ‘Speciosa’, or ‘Firetail’ is a clump-forming, vigorous semi evergreen perennial. Persicaria plants are known for their long flowering period, from mid-summer into autumn they produce long red flowering spikes above a mound of mid-green leaves.
An excellent variety for the edge of a pond or a damp garden or in light, dappled shade beneath trees and shrubs.
Persicaria plants have also been known as Polygonum plants.
Details Persicaria amplexicaulis Speciosa
- Covers bare spots quickly
- Dense Growth
- Blooms: August – October
- Flower colour: red
- Leaf colour: Green
- Full grown: 2 Years
- Full grown height: 75 – 100 cm
- Full grown width: 40 – 60 cm
- Plant location: sunny
- Plant depth: 12 cm
- Plant spacing: 30 cm
- Hardiness: -15 Celsius
How to take care of Persicaria Speciosa
Suitable for the rock garden or along a ponds edge. This plant prefers a damp place, but can be fairly drought tolerant once established. Requires a sunny spot and a moderately rich soil. It can tolerate partial shade too.
Grows generally quite fast and can grow to very large clumps which needs dividing every 2 -3 seasons. In spring, take the plant out of the ground and cut the clump into several pieces. Each piece needs some leaves and some roots to plant back down.
Plant them back in the ground immediately after splitting. Never let the roots dry out. Generally disease-free. Deadhead spent flower spikes. Clean up decaying leaves of perennials around the plant to avoid suffocating the plant.