You’ve gotta love annual vinca — it really delivers. It will tolerate a wide variety of conditions and still keep it up with almost unreal-looking, glossy green flowers and pretty pink, lavender, or red flowers that look like tiny parasols.
Whether the summer is dry or wet, hot or cold, vinca plugs along unfazed. It makes a great container plant. Or plant it in a bed or border, grouping at least eight or more together for best effect.
Plant established seedlings in spring after all danger of frost has passed. Vinca withstands drought but does best with moderate moisture. Fertilize occasionally. Like impatiens, this plant tends to be “self-cleaning” and needs little deadheading.