Surface to 1/16"; requires light to germinate
Recommended: Sow in pots 8-10 weeks before last frost. Keep at 70-80°F.
Direct sow into warm soil after last frost in longer season areas (zone 7-10).
WHEN TO SET OUTSIDE
After all danger of frost has passed.
PLACEMENT & CULTIVATION
Purple bell vine is a delicate looking but vigorous vine that thrives in sheltered spot in the border or in a container with a trellis to climb, where the showy blossoms and long lasting calyxes can be appreciated up close. Pinch when setting out to develop branching growth and more flowering. Overwinter indoors if desired, bringing in when night temperatures are in the low 40's. Site in a sunny, south-facing window.
About 1" of water per week, more during especially hot, dry spells.
Does well in acidic soils.
Mix in several inches of compost prior to planting. Alternatively, feed with an organic fertilizer once per month or mix in a granular, slow-release type.
Diseases & Pests:
Plants are very salt-sensitive.