Portulaca (Moss Rose) in Zone 6a & 6b

Portulaca grandiflora

When to plant portulaca (moss rose) in zone 6b

Zones 6a and 6b share the same average frost dates in our data, so this page covers both.

Method: Either: Start indoors for an earlier harvest, or direct-sow outside for less fuss. Portulaca (Moss Rose) tolerates either.

Spacing: 1 per square foot (square-foot-gardening spacing). Mature height: 4-8 in.

Portulaca (moss rose) is native to hot, dry plains in South America, and it shows: this is a good summer annual for the driest, sunniest, most neglected corner of the garden, not a plant that needs coddling. It forms a succulent, 4- to 8-inch mat studded with rose-like or single cup blooms in bright pink, orange, yellow, red, or white.

How portulaca (moss rose) fits zone 6's season

Zone 6b's frost-free window runs about 173 days, from April 25 to October 15. Portulaca (Moss Rose) needs about 60 days from sowing to first harvest.

Good companions

No standout companions recorded yet for Portulaca (Moss Rose).

Where to buy portulaca seeds

• Botanical Interests
• True Leaf Market
• Burpee
• High Mowing Organic Seeds

See why we recommend these suppliers →

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See it growing

Search YouTube for "growing portulaca (moss rose)" videos → (a live search, not a hand-picked video; results vary and aren't vetted by us)

← Back to the full zone 6b calendar · Full companion planting guide · Full plant profile · Plan your beds in the Garden Designer →

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Growing Portulaca (Moss Rose) in USDA zone 6b: when to start seeds indoors, when to direct-sow, and when to expect a bloom.

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