Description
Planting Instructions: Start Vinca Periwinkle seeds indoors 10-12 weeks before the last frost by pressing seeds about 1/4 inch deep into moist, well-draining seed-starting mix. Cover seeds fully as they require darkness to germinate, maintaining soil warmth around 70-80F (21-27C). Keep soil consistently moist but not soggy. Germination typically occurs within 7-14 days. After seedlings appear, move to bright indirect light and harden off for 7-10 days before transplanting outdoors post-frost.
Sunlight & Soil: Full sun to partial shade in well-draining, average soil with pH 6.0-7.5 preferred.
Watering Tips: Water transplants regularly until established; then Vinca is drought tolerant and requires moderate watering.
Best Season to Grow: Start indoors in late winter or early spring; transplant outdoors after frost risk passes.
Care: No deadheading necessary; mulch to retain moisture and control weeds. Space plants 6-12 inches apart for best growth and airflow.
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