After a month or so, they should be well established and you don’t need to add water unless the soil dries out.
However, if it’s the flowers you’re after, the soil shouldn’t be allowed to dry out completely.
Some gardeners opt to let the soil dry out as a method of controlling the spread since no flowers means no seed-filled burrs.
If the plant is spreading into an area where you don’t want it, let the plants dry out as much as possible.
There’s no need to feed your agrimony. It’s fine without any added nutrients.
Species to Select
Most species of Agrimonia look similar and can be grown in the same way, but it helps to know a bit about each one.
Swamp or small-flowered agrimony (A. parviflora), sometimes called harvestlice, is considered a noxious weed in many areas.
With its tiny, less showy flowers and invasive tendencies, it’s best avoided.
Eupatoria
Common agrimony (A. eupatoria) is the species typically called church steeples for its tall stems of flowers.
It’s the species most commonly cultivated in home gardens. That’s partially because the flower stalks are dense and showy, and they appear from June through September.
You can find packets of 10 seeds available from Earthbeat Seeds.
Gryposepala
Tall or hooked agrimony (A. gryposepala) grows wild in disturbed areas and, as the name suggests, can grow over five feet tall.
The undersides of the leaves and stems have faint hairs. This species is native to North American woodlands and was an important plant used medicinally by indigenous people.
Procera
Fragrant agrimony (A. procera, syn. A. odorata) stands out not just for its size, reaching about three feet tall before flowering, but for its strong, pleasant scent.
It’s the only species in the genus with a noticeable fragrance, produced by glands on the undersides of the leaves.
Visually, it resembles common agrimony and often grows in the same habitats.
The easiest way to distinguish it is by scent, though the leaves are also more finely serrated if you take a closer look.
Pubescens
The leaves of A. pubescens aka downy agrimony are hairy on the undersides, inspiring its common name.
