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Crassula helmsii

New Zealand pigmyweed

This plant is listed on Schedule 9 of the UK Wildlife & Countryside Act as an invasive, non-native species and is banned from sale. See cultivation notes for further details A pond weed with trailing stems, small, succulent leaves, and small, whitish flowers. It grows in wet mud beside water, or floats on the surfaceforming dense mats up to 3m deep

Other common names
Australian swamp stonecrop
New Zealand pygmy weed
Synonyms
Crassula recurva
Size
Ultimate height
0.1–0.5 metres
Time to ultimate height
2–5 years
Ultimate spread
0.1–0.5 metres
Growing conditions
Chalk
Clay
Loam
Sand
Moisture
Poorly–drained
pH
Acid, Alkaline, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Green
Summer White Green
Autumn Green
Winter
Position
  • Full sun
Aspect

South–facing or West–facing or East–facing

Exposure
Sheltered
Hardiness
H5
Botanical details
Family
Crassulaceae
Native to the UK
No
Foliage
Deciduous
Habit
Matforming
Genus

Crassula can be succulent annuals, perennials, evergreen shrubs or sub-shrubs, with fleshy leaves and small, star-shaped or funnel-shaped flowers in a terminal cluster

Name status

Correct

How to grow

Cultivation

This plant is listed on Schedule 9 of the UK Wildlife & Countryside Act as an invasive non-native species. Across the EU, UK and NI it is an offence to plant or cause to grow in the wild plants listed on Schedule 9 of this order. These plants should not be planted or caused to grow in the wild and in addition are banned from sale. Gardeners possessing them should undertake measures to control them. See RHS advice on invasive non-native species for further information

Propagation

Spreads through broken stem fragments; seeds are produced but are not thought to be viable. See cultivation notes

Suggested planting locations and garden types

Get involved

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