If you’re a fan of blue flowers, you may already be familiar with blue tweedia (Oxypetalum caeruleum or Tweedia caerulea). This species, known botanically as Oxypetalum solanoides or Tweedia solanoides, is similar in growth habit and flower form–sprays of five-petaled, summer blooms and fuzzy, slender leaves on upright to somewhat sprawling stems to about 2 feet tall–but a little smaller and in soft pink rather than sky blue. The flowers are followed by slender, milkweed-like pods that split to release silky-tufted seeds. (If you don’t intend to collect seeds, I suggest removing the developing seedpods to encourage rebloom.) Best in full sun.
Pink tweedia is hardy in Zones 8 to 10, but you can grow it as an annual anywhere. Or, treat it like a tender perennial and bring the plant indoors for the winter. I overwinter my potted clumps in my unheated, mostly dark basement and barely water them; the leaves drop and the remaining stems look rough. In late spring, I cut them back to about 6 inches and then set them out after the last frost date and begin watering again. They re-sprout quickly and produce an abundance of bloom in early to midsummer.
Collected in August 2022. At least 10 seeds.
Please read the germination information as well before ordering.
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