- Botanical name: Persicaria affinis
- Common name: Knotweed
- Family: Polygonaceae
- Plant Type: Perennial, Evergreen
Pink
Green
- Key features:
- Flowers
- Attractive to wildlife
Persicaria affinis is a creeping, mat-forming perennial, with narrow green leaves and lollipop spikes of pale pink flowers. Semi-evergreen, it makes a fine choice for using as ground cover in a mixed herbaceous border, and its blooms are popular with pollinators.
Grow Persicaria affinis in full sun to partial shade, in moisture retentive soil. Cut back after flowering and divide congested clumps every three years.
How to grow Persicaria affinis
-
Plant size
25cm height
75cm spread
-
Aspect
South facing, west facing
-
Position in border
Front
- Sun exposure: Full sun, dappled shade, partial shade
- Hardiness: Hardy
- Soil type: Clay / heavy / moist
Plant calendar
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Plant | ||||||||||||
| Plant |
J
Do not Plant in January |
F
Do not Plant in February |
M
Do not Plant in March |
A
Do not Plant in April |
M
Do Plant in May |
J
Do Plant in June |
J
Do Plant in July |
A
Do Plant in August |
S
Do Plant in September |
O
Do not Plant in October |
N
Do not Plant in November |
D
Do not Plant in December |
| Flowers | ||||||||||||
| Flowers |
J
Plant does not flower in January |
F
Plant does not flower in February |
M
Plant does not flower in March |
A
Plant does not flower in April |
M
Plant does not flower in May |
J
Plant does flower in June |
J
Plant does flower in July |
A
Plant does flower in August |
S
Plant does not flower in September |
O
Plant does not flower in October |
N
Plant does not flower in November |
D
Plant does not flower in December |
| Divide | ||||||||||||
| Divide |
J
Do not Divide in January |
F
Do not Divide in February |
M
Do Divide in March |
A
Do Divide in April |
M
Do not Divide in May |
J
Do not Divide in June |
J
Do not Divide in July |
A
Do not Divide in August |
S
Do Divide in September |
O
Do Divide in October |
N
Do not Divide in November |
D
Do not Divide in December |
| Prune | ||||||||||||
| Prune |
J
Do not Prune in January |
F
Do not Prune in February |
M
Do not Prune in March |
A
Do not Prune in April |
M
Do not Prune in May |
J
Do not Prune in June |
J
Do not Prune in July |
A
Do not Prune in August |
S
Do Prune in September |
O
Do Prune in October |
N
Do not Prune in November |
D
Do not Prune in December |
Persicaria affinis and wildlife
Persicaria affinis is known for attracting bees and other pollinators. It has nectar/pollen rich flowers.
Attractive to Bees
Does not attract Beneficial insects
Does not attract Birds
Does not attract Butterflies/Moths
Attractive to Other pollinators
Is Persicaria affinis poisonous?
Persicaria affinis has no toxic effects reported.
No reported toxicity to Birds
No reported toxicity to Cats
No reported toxicity to Dogs
No reported toxicity to Horses
No reported toxicity to Livestock
No reported toxicity to People
Plants that go well with Persicaria affinis
