How to Grow Rocky Mountain Bee Plant Seeds (Rocky Mountain Beeplant / Cleome serrulata):
Rocky Mountain Bee Plant is a fast-growing annual wildflower with airy pink-purple blooms that bees and butterflies love. For easiest success, sow seeds outdoors in late fall so winter chill helps break dormancy naturally; they will sprout when the weather warms. If you’re sowing in spring, you can improve germination by cold-stratifying the seeds first: place them in slightly damp sand or a paper towel in the fridge for about 3–4 weeks, then sow.
Choose a full-sun spot with well-drained soil. This plant thrives in average to dry, sandy, or rocky ground and does not like soggy clay. Scatter seeds on the soil surface and press them in lightly or cover with just a dusting of soil—don’t bury deeply. Keep the top layer of soil lightly moist until seedlings emerge; germination can take anywhere from 10 to 30+ days depending on temperature. When seedlings are a few inches tall, thin or transplant so plants stand about 30–45 cm (12–18 in) apart.
How to Care for Rocky Mountain Bee Plant:
Water regularly only during the seedling stage to help roots establish. Once the plant is growing strongly, it becomes drought-tolerant and prefers drier conditions, so let soil dry between waterings and avoid overwatering. Fertilizer is usually unnecessary; rich or high-nitrogen soil can cause floppy growth and fewer flowers.
This plant blooms through summer into fall with minimal maintenance. You can deadhead for a tidier look, but leaving some seed pods is great if you want it to self-seed for next year. It rarely has serious pest or disease issues as long as it gets full sun and good drainage. If you don’t want volunteers next season, remove plants before the pods fully dry and drop seeds.
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