Coleus, Portulaca, and Purslane: Seeds, Cuttings, and Self-Sowing

Kristin asks about coleus seeds, portulaca/purslane cuttings.

Coleus

Won't self-sow in cold climates—seeds die.
Cuttings root in days in water.
Overwinter as houseplant in sunny window; take cuttings in spring for outdoor plants.

Cuttings root easily in moist soil directly—no water needed.
Both self-sow prolifically; return yearly even in cold zones (Kansas City example).
Frost kills plants, but seeds survive.

For coleus: water cuttings. For portulaca/purslane: stick cuttings in damp soil. Both are generous propagators.

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