When to sow moss rose?
- Botanical name
- Portulaca grandiflora
- Family
- Portulacaceae
Moss rose is sown from May to June. It flowers from June to October.
Moss rose is an annual plant. The edible parts are the seeds.
Moss rose through the year
- sowing
- flowering
In short
The last frost is not on the same day everywhere, so the recorded weeks are a guide and not a date.
Growing conditions
Pests and diseases
Listed here is every problem for which the sources name this plant as a host. The problems are not listed in order of how common they are.
Aphids
pest- Signs
- Colonies of small aphids sit on the shoot tips and the underside of the leaves. The leaf curls and puckers, and sticky honeydew is left on everything below. The viruses they carry are more dangerous than the feeding itself.
- Prevention
- Go easy on nitrogen, because soft sappy growth is what aphids are looking for. Encourage the predators (ladybirds, lacewings, parasitic wasps). Use a reflective mulch, which puts them off settling, and a strong jet of water to knock the colony off the tips.
Slugs and snails
pest- Signs
- Holes appear in the middle of the leaf rather than along the edge, young plants are eaten down to the ground, and there are slimy trails in the morning. On low-growing fruit there are gnawed pits.
- Prevention
- Remove the hiding places beside the bed: boards, stones, dense weeds. Water in the morning and not in the evening, so that the night is dry. Spread a band of coarse sand or gravel around the bed. Cover young plants with fleece. Pick them off at night, which is still the most effective measure.
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Related plants
The plant below is in the same botanical family (Portulacaceae).
Sources about the plant: GBIF Backbone Taxonomy, NC State Extension Plant Toolbox, University of Wisconsin-Madison Division of Extension, Wikidata. Checked between 14 and 28 August 2026. The problem descriptions also draw on: Clemson Cooperative Extension, Royal Horticultural Society, University of Maryland Extension, Utah State University Extension.