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Portulaca

Portulaca grandiflora
Also known as: Moss Rose, Rose Moss, Sun Plant, Eleven O'Clock

Portulaca is a flower in the Portulacaceae family. It grows best in full sun with dry moisture, and is listed for USDA zones 2-13. Plants reach maturity about 84–91 days after planting and sit about 6 inches apart.

Varieties

1 from True Leaf Market · sorted by days to maturity
  • Double Mix84–91 days

    Non-GMO; Container; Annual

    84-91 Days to maturity. Portulaca grandiflora. Double Mix Portulaca Seeds. Non-GMO, annual. Double Mix portulaca seeds promise some of the most stunning, and most convenient succulents available to home gardeners. Portulaca Double Mix seeds grow 2" bushy rose-like blooms atop a compact dwarf succulent with a creeping spread ideal for hanging baskets, containers, rock gardens, or sprawled over a wall. Double Mix portulaca is easy to grow from seed and is known to thrive in poor soils and gardens prone to heat and drought. Portulaca Double Mix seeds promise neat and tidy succulents and are the perfect plant for front of a dryer border or edging walkways. About 238,000 seeds per oz.

    View on True Leaf Market
Family
Portulacaceae
Category
Flower
Form
Bush
Lifecycle
annual
Zone
2-13
Height
0.3333333333333333–0.6666666666666666 ft
Spread
1–1.5 ft
Sun
Full sun

Plant spacing

4 plants per square footSquare-foot planting diagram: a 1-foot square divided into a 2-by-2 grid holding 4 portulaca plants spaced 6 inches apart.
4 plants per square foot

In a square-foot bed, space portulaca about 6 in apart — that fits 4 plants in each 1-foot square (2×2). Wider rows or containers space the same.

Water
Dry

Plan your portulaca planting

Add portulaca to a free GardenDraft plan and get sow, transplant, and harvest dates computed for your ZIP code — with a drag-and-drop bed layout and reminders when it’s time to plant.

Start your free plan →

At a glance

Days to harvest
84–91 days
From transplant or sow to first harvest
Harvest style
Harvest once
One main harvest
After harvest
Use within days
Quality eases off after peak
Frost tolerance
Tender · to ~32°F
Lowest temperature the foliage usually survives
Germination
~60%
Typical minimum germination rate

Growing timeline

When to plant and harvest portulacaPlanting timeline for portulaca, relative to last frost: start indoors from 7 weeks before last frost to 1 week after last frost; grow from 1 week after last frost to 13 weeks after last frost; harvest from 13 weeks after last frost to 14 weeks after last frost.Start indoorsGrowLast frostTransplant
Start portulaca indoors ~8 weeks before transplanting 1 week after last frost; first harvest 13 weeks after last frost.
Seed to transplant
42-56 days
Outdoor planting
7 to 14 days vs frost
Propagation
Seed
Schedule anchor
Last Frost

Care & troubleshooting

No curated care & troubleshooting advice for portulaca yet. Our extension-sourced library currently focuses on common edible crops; we're expanding it over time.