Swamp stonecrop (Crassula helmsii)

Swamp stonecrop

Also known as: New zealand pygmyweed

Swamp stonecrop is a hardy aquatic or semi-terrestrial succulent. Its shiny, rounded leaves tightly clasp its sprawling stems, which root at the nodes when in contact with moist soil or water. This vibrant green species flourishes in damp, nutrient-rich environments, often forming dense mats that float on water surfaces or carpet wet ground. Its small, star-shaped flowers offer a stark white contrast in summer.

Scientific classification

Species

Swamp stonecrop (Crassula helmsii)

Saxifrages, stonecrops and allies

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Perennial

Lifespan

Succulent

Plant Type

5 cm

Plant Height

50 cm

Spread

Green

Leaf Color

20 - 38 ℃

Ideal Temperature

Images of Swamp stonecrop

Distribution of Swamp stonecrop

Distribution Map

Swamp stonecrop, native to Australasia, has made its way to assorted regions of Europe where its presence ranges from introduced to invasive. In some areas, swamp stonecrop is sometimes thought to garner ecological interest due to its potential to have an impact on native habitats. Though cultivated in various locales, the extent of which is not specified, the plant's adaptability allows it to flourish in new environments, occasionally raising concerns about its effects on indigenous ecosystems.

Native

Cultivated

Invasive

Introduced

No species reported

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Care Guide for Swamp stonecrop

Every 3 weeks

Water

Partial sun

Sunlight

20 - 38 ℃

Ideal Temperature

Water: Swamp stonecrop requires careful watering based on its dormancy state and environmental conditions. In hot weather, water every 1-2 weeks. Water in the evening during summer, and check for soil moisture by weight. Signs of water shortage include wrinkled leaves, and pot type affects watering frequency.

Fertilize: Most succulent plants, including swamp stonecrop, thrive in poor environments and do not require fertilization during their growth cycle. A slight application of slow-release fertilizer in early summer is acceptable, but avoid fertilizing during dormancy to prevent nutrient damage.

Pruning: Swamp stonecrop is a semi-aquatic succulent that requires pruning in early spring to control its invasive growth. Trim overgrown stems and remove dead leaves to encourage healthy, dense foliage. Use clean, sharp tools to reduce stress and prevent infection.

Propagation: Propagation of swamp stonecrop commonly involves using leaves for cuttings, preferably in spring or autumn. Cut a healthy leaf and lay it on slightly humid soil, ensuring it receives bright scattered light at 25℃ (77℉). Buds typically appear at the leaf base within one to two weeks.

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Images of Swamp stonecrop

Distribution of Swamp stonecrop

Care Guide for Swamp stonecrop

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