Eupatorium perfoliatum

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Eupatorium perfoliatum, known as common boneset or just boneset, is a North American perennial plant in the aster family. It is a common native to the Eastern United States and Canada, widespread from Nova Scotia to Florida, west as far as Texas, Nebraska, the Dakotas, and Manitoba. It is also called agueweed, feverwort, or sweating-plant.

Eupatorium perfoliatum is a specific butterfly food and habitat plant. It provides nectar for butterflies in the adult life cycle stage, particularly the white M hairstreak and the bronze copper butterfly.

Eupatorium perfoliatum grows up to 100 cm (39 inches) tall, with leaves that clasp the stems. The plant produces dense clusters of tiny white flower heads held above the foliage. It grows especially well in low, wet areas.

Type: Hardy perennial

Seeds per pack: 30

Location: Sun or part sun

Hardiness zones: 3-8

Height: 100 cm (39 inches) tall

Bloom time: Summer to fall

Note: Although the Eupatorium nectar is an excellent food-source for butterflies, the plants are seeds are poisonous to people and animals. Keep in a safe place.

Seeds per pack: 30

Germination: As with many perennial seeds, these seeds require a period of moist cold to help them break dormancy. This is done by giving them a cold 'winter' period (artificial or natural), and then a warming to simulate 'spring', and time to grow! Here's how this can be done:

Obtain a planting container that has holes in the bottom for excess water to drain. Place the seeds just under the surface of your growing medium, and water. Place your container in a cold area (but not freezing, perhaps a refrigerator) for 4-6 weeks. Once the cold period is completed, place the container at room temperature for them to germinate. Be sure to keep the soil moist during this entire germination period. Seedlings will sprout a few weeks, or occasionally several months, after the warming period.

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