Water
Keep the soil consistently moist, especially during hot, dry periods. Water deeply when the top 2-3 cm of soil feels dry. Avoid waterlogging, as this can lead to root rot.
Reduce watering in cooler months when growth slows.
Also known as American Jumpseed · John Dietrich · Jumpseed
Virginia knotweed (Persicaria virginiana) is an upright, herbaceous perennial native to eastern North America, featuring attractive foliage and a graceful habit for shady
At-a-glance light, water, soil, and growing conditions from plant data
Partial Shade to Full Sun
50% intensity
Thrives in partial shade but can tolerate full sun, especially in cooler climates. Protect from intense afternoon sun in hot regions.
Consistent Moisture
50% intensity
Prefers evenly moist soil, but can tolerate brief dry spells once established. Avoid waterlogged conditions.
Well-drained
50% intensity
Hardy
50% intensity
Prefers average room temperatures between 18-24°C. Can withstand cooler temperatures in winter, with reduced watering.
Low Feed
25% intensity
Not a heavy feeder. A light application of balanced fertilizer in spring is sufficient. Over-fertilizing can reduce flowering.
Safety information from plant toxicity data
| Attribute | Value |
|---|---|
| Toxic for humans | No 0/5 intensity |
| Toxic for pets | No 0/5 intensity |
Contains oxalic acid, causing gastrointestinal upset and skin irritation.
Key traits and growing stats from plant data
Watering, pruning, propagation, and repotting details from plant data
Keep the soil consistently moist, especially during hot, dry periods. Water deeply when the top 2-3 cm of soil feels dry. Avoid waterlogging, as this can lead to root rot.
Reduce watering in cooler months when growth slows.
Prune in late winter or early spring before new growth emerges. Remove any dead, damaged, or crossing stems.
Cut back plants to about 15-20 cm from the ground to encourage fresh, vigorous growth and maintain a tidy shape. Deadheading spent flowers can prevent self-seeding.
Propagate by division in early spring, separating clumps into smaller sections, each with roots and shoots. Stem cuttings can also be taken in late spring or early summer and rooted in moist potting mix or water.
Seed can be sown in autumn or early spring.
Repot container-grown plants every 2-3 years in early spring to refresh the soil and provide more space for root growth. Choose a pot that is slightly larger than the current one.
Use a well-draining potting mix, and water thoroughly after repotting.
Identify plants like this with ePlant AI
Snap a photo to get care tips and match similar species on the go.
Monthly activity intensity for bloom and fruit across both hemispheres.
Flowering & fruiting calendar
Flowering & fruiting calendar
Photos of Polygonum Virginianum (Persicaria virginiana)
Where Polygonum Virginianum (Persicaria virginiana) is found
Density
Tap map to explore
Common names and botanical synonyms
Botanical classification
| Rank | Name |
|---|---|
| Kingdom | Plantae |
| Division | Tracheophyta |
| Class | Magnoliopsida |
| Order | Caryophyllales |
| Family | Polygonaceae |
| Genus | Persicaria |
| Species | Persicaria virginiana |
Similar in genus Persicaria
Answers based on plant encyclopedia data
