Common purslane (Portulaca oleracea) - How to Grow & Care Guide

Plant Snapshot

Common Name: Common purslane
Latin Name: Portulaca oleracea
Hardiness Zones: Frost tender as an annual in cool climates; can persist where freezes are rare, typically surviving as a perennial in warmer USDA zones
Typical Height: Usually 2–6 in (5–15 cm) tall when prostrate; stems may be longer horizontally
Typical Spread: Forms mats commonly 6–24 in (15–60 cm) across from sprawling stems and seedlings
Bloom Period: Blooms in warm months, typically summer to early fall in temperate climates
Soil Preferences: Prefers well drained sandy to loamy soils; tolerates poor, compacted, and moderately saline soils; avoids waterlogged conditions
Light Preferences: Full sun for best compact habit and flowering; tolerates partial shade but becomes lanky and flowers less
Toxicity: Edible for humans but contains oxalates; ASPCA lists common purslane as non toxic to dogs and cats; large amounts may pose risk to livestock or sensitive individuals
Propagation: Propagates easily by seed and by stem fragments that root at nodes; sow seed in warm soils or use stem cuttings to root quickly

Key Facts

A low, succulent annual that forms mats or clumps
Leaves are fleshy and smooth and stems are prostrate and often red-tinged
Produces small yellow flowers that open in full sun
Edible raw or cooked and high in omega-3 fatty acids and vitamin C
Tolerates poor, compacted, and dry soils but does not like waterlogged ground
Spreads readily by seed and by stems that root at the nodes
Generally frost sensitive and dies back after hard freezes in cool climates

Common purslane (Portulaca oleracea) is a low succulent that forms mats and produces small yellow flowers, prized by some gardeners as an edible groundcover and considered a persistent weed by others. It tolerates poor dry soils but can spread quickly from prolific seed and from stems that root at the nodes, so placement matters.

Identification

Leaves are fleshy smooth and stems lie flat and often show a red tinge, producing small yellow flowers that open in full sun. Plants grow very low in height usually two to six inches and can sprawl to cover six to twenty four inches across from seedlings and rooting stems.

Best uses and where to grow

Use common purslane as a low edible groundcover in hot sunny spots where drought tolerant plants are needed and aggressive spread is acceptable. It performs best in full sun for compact habit and flowering and will persist where freezes are rare in USDA zones nine to eleven but acts as a frost tender annual in cooler climates.

Planting and propagation

Sow seed in warm soil after the last frosts for best establishment or use stem cuttings which root quickly at the nodes. Plants reproduce readily by seed and vegetative rooting so remove flower stalks before seed set if you want to limit naturalizing and avoid leaving stem fragments that contact soil.

Soil and watering

Prefers well drained sandy to loamy soils and tolerates poor compacted and moderately saline ground as long as it is not waterlogged. Overly wet soil reduces survival while dry conditions are tolerated and promote the succulent habit and flowering in warm months.

After flowering and control

Control relies on removing flowering stems before seed ripens because seed banks can persist and drive reinfestation. Since stems root at nodes avoid leaving fragments on soil and hand pulling or removing mats before seeds mature is the most reliable way to reduce spread.

Edible use and safety

Leaves and young stems are edible raw or cooked and are a source of omega three fatty acids and vitamin C. The plant contains oxalates and large quantities could be a concern for some animals or sensitive people. ASPCA lists common purslane as non toxic to dogs and cats but livestock risk is possible in high intake.

Frequently asked questions

How fast does Common purslane grow?: It grows rapidly in warm weather forming mats within a single season because it spreads both by abundant seed and by stems that root where they touch soil.
Is purslane edible?: Yes leaves and young stems are edible raw or cooked and provide omega three fatty acids and vitamin C.
Are purslane plants toxic to pets?: ASPCA lists common purslane as non toxic to dogs and cats but the plant contains oxalates and large amounts may pose a risk to some animals or people.
Will purslane come back every year?: In cool climates the plant is frost sensitive and dies back after hard freezes with return from seed the next year while in warmer USDA zones nine to eleven it can persist and behave more aggressively.
Can I grow purslane in containers?: Yes it can be grown from seed or from stem cuttings in pots provided the medium is well drained and the container receives plenty of sun.
How do I prevent purslane from spreading?: Remove flowering stems before seed set avoid leaving rooting stem fragments and clear seedlings promptly to reduce the seed bank and limit new mats.