Genus guide
Persicaria — 8 species
Persicaria is a genus of robust, clump-forming perennials known for their long flowering season and adaptability. Cultivars such as Persicaria amplexicaulis 'Alba' and 'Blackfield', P. bistorta 'Superba', and P. orientalis bear dense, bottlebrush flower spikes in shades of red, pink, and white from midsummer well into autumn. They perform best in full sun to partial shade and require consistently moist, humus-rich soil — they excel beside ponds or in bog gardens. All Persicaria species are toxic to cats and dogs and should be planted away from areas where pets roam.
All Persicaria species we cover
- Amphibious Bistort
- Common Bistort
- Persicaria amplexicaulis 'Alba'
- Persicaria amplexicaulis 'Blackfield'
- Persicaria amplexicaulis 'Firetail'
- Persicaria bistorta 'Superba'
- Persicaria orientalis
- Vietnamese Coriander
Persicaria — frequently asked questions
Are Persicaria plants toxic to cats and dogs?
Most Persicaria are not pet-safe. Of the 8 Persicaria species in the Growli library, 8 (100%) carry a toxic or mildly-toxic ASPCA classification and 0 are pet-safe. Always confirm the exact species on its pet-safety page before trusting it around cats or dogs.
How much light do Persicaria plants need?
Most Persicaria do best in direct sun. If yours stretches toward the window or loses its variegation it wants more light; scorched or bleached leaves mean it is getting too much direct sun.
Are Persicaria easy to care for?
Some Persicaria suit more experienced growers — several want strong light, sharp drainage or a specific seasonal rhythm. Check the individual species page for the exact regime.
How many Persicaria varieties are there?
Growli's care library covers 8 Persicaria species and varieties — browse them all above. They share a similar light, water and soil pattern, so once you learn one Persicaria, the rest follow closely.
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