Bupleurum, Green Gold

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Bupleurum, Green Gold, B. rotundifolium - 50 or 200 seeds avg. A cluster of tiny yellow flowers that is beautiful fresh until it develops into a seed head. Planting Tips: A cool-se ason hardy annual that prefers full sun. Planting seeds directly in the garden is preferred. Place seeds in the freezer for two weeks prior to planting. Cover seed; allow 10-14 days to germinate. Ht. 24"-36". Thin seedlings once 5" tall to 9" apart in the garden. Winter hardy in zone 5 and south. Will reseed in your garden. 80-90 days to bloom. Keep the Blooms Coming: Harvest the central stem at almost ground level, just above the lowest two to three side shoots. Harvest anytime, from when the tiny yellow flowers have begun to open until it develops its beautiful seed head. Show more