Portulaca

Portulaca grandiflora

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verifiedReviewed by the GreenScout Team

Portulaca is a vibrant, heat-loving annual with succulent foliage and cheerful, rose-like flowers in brilliant colors. These low-growing, mat-forming plants thrive in hot, dry conditions and are excellent for containers, rock gardens, and sunny borders. Flowers typically open during sunny days and close in shade or at dusk.

Common Problems

Select the problem your Portulaca is experiencing to get a treatment guide.

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Root Rotchevron_right

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Overwateringchevron_right

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Slow Growthchevron_right

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Pale Leaveschevron_right

Care Guide

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Light

Full sun required; minimum 6–8 hours of direct sunlight daily for optimal flowering.

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Water

Water sparingly once established. Allow soil to dry between waterings. Extremely drought-tolerant; overwatering is the primary killer.

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Soil

Very well-draining sandy or gritty soil. Add perlite and sand to regular potting mix. Tolerates poor soil.

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Fertiliser

Light fertilizing optional; use half-strength balanced fertilizer monthly if desired. Too much nitrogen reduces flowering.

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Temperature

Heat-loving; thrives in 75–95°F (24–35°C). Sensitive to frost; grow as annual in cooler zones.

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Humidity

Low humidity preferred; extremely tolerant of dry conditions. Good air circulation reduces disease risk.

Toxicity

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Non-toxic to humans and pets; safe for all.

Common Diseases

filter_dramaRoot Rotchevron_right scienceBotrytis Grey Mouldchevron_right

Common Pests

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Seasonal Care

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Resume regular watering and feeding as growth picks up.

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Peak growing season. Water and feed regularly.

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Reduce watering as growth slows. Stop heavy feeding.

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Minimal watering and feeding. Protect from frost if needed.

Frequently Asked Questions

Why do my Portulaca flowers close in the afternoon?

Its blooms typically open during sunny days and close in shade or at dusk, so flowers may appear shut on cloudy days or as the sun moves — this is normal behavior, not a sign of stress.

Why did my Portulaca die after I watered it a lot?

Overwatering is its primary killer — as a succulent-leaved, extremely drought-tolerant annual, it needs soil to dry out between waterings and will develop root rot in consistently wet conditions.