Caption
Boneset (Eupatorium perfoliatum) is a North American native wildflower, prized for its delicate white blooms and value to pollinators.
Photo Credit
Elnas Wae
Botanical Name
Eupatorium perfoliatum
Plant Type
Soil pH
Flower Color
Special Features
Subhead
An Old-Fashioned Healer That Attracts Bees and Butterflies
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Water
Consistently moist soil is essential for healthy boneset plants. I find it’s much easier to maintain these plants if you grow them in areas that are naturally damp, such as low sections of your garden where water tends to pool. However, you can grow boneset in drier areas if you water it enough to keep the soil evenly damp, and add mulch to reduce moisture evaporation.
Light
Boneset blooms and flowers best in full sun to part shade conditions. If your plants aren’t flowering much, they may need more light!
Humidity
Boneset isn’t picky about humidity, but high humidity can increase the risk of mildew problems.
Temperature
Cold hardy boneset doesn't mind chilly temperatures and is winter hardy in zones 3 and up.
Fertilizer
Like other native plants, boneset doesn’t need fertilizer and overly rich soil can cause these plants to develop droopy and weak stems that require staking.
Toxicity
Boneset is toxic to pets and livestock.
Gardening Products
Propagation
Like many other perennials, boneset needs to be divided every few years to keep the plants healthy and blooming strong. Root division is an excellent way to produce more boneset plants, but you can also propagate boneset from cuttings or from seeds you collect yourself!
- Root division: Dig up a clump of boneset in spring or fall and cut the plant’s roots into smaller sections using a spade or two gardening forks back to back. Make sure each division has a healthy clump of roots and at least a stem or two, and then re-plant the divisions and water well.
- Stem cuttings: Take 4 to 6-inch long stem cuttings from healthy plants in spring or fall, dip the cut stem end in water and rooting hormone, and then plant the cuttings in damp potting soil. Keep the cuttings evenly moist and in partial shade until they root and can’t be easily lifted from the soil with your fingers.
- Seeds: Wait for boneset flowers to dry on the plant and then collect the dried seeds by shaking the flowerheads over a paper bag in fall. Leave the top of the bag open and allow the seeds to dry indoors for a few days. Then seal the seeds in labeled and dated paper envelopes until you’re ready to plant them!
Seasonal Care
Pruning is usually not necessary with these plants and they shouldn’t need any winter protection. Just trim the old dead stems to the ground in spring to give your garden a tidier look. If you want boneset to flower a little more, you can also pinch the very tips of the growing stems back to a leaf node in early summer before the plant sets flower buds; however, this treatment is not required.


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