Jatropha cathartica

Jatropha cathartica key facts

Growing Difficulty

Beginner-friendly

Lifespan

Long-lived perennial (little published data)

Size

Caudex up to about 20 cm wide and 30 cm tall; stems about 30 cm

Watering

Light feeding in the growing season

Light & Placement

It grows in sun or shade and does well in pots at a bright window or in a greenhouse.

Watering

Plant in a free-draining mix and, in the growing season, let it dry between waterings.

Dormancy Care

In winter the stems and leaves die back; cut off the dry stalks and keep the plant on the dry side.

Temperature & Overwintering

Cold, damp conditions make the caudex soft and rotten, so keep it dry and warm in winter.

Propagation

Propagate from seed or cuttings.

About Jatropha cathartica

Jatropha cathartica (Nishiki-sango) is a spurge-family caudex plant with a pale, globular caudex and lobed gray-green leaves, bearing pink to scarlet-red blooms; a beginner-friendly, long-lived perennial.

7 things to know before growing Jatropha cathartica

1. 1Sunlight & Placement

   Jatropha cathartica thrives with plenty of light, so keep it in the brightest spot you can offer, indoors or out. In peak summer, harsh direct sun can scorch the leaves, so shift it to filtered light or a well-ventilated, partly shaded spot during the hottest stretch.

2. 2Watering Basics

   Because the caudex stores water, let the soil surface dry out before watering thoroughly. Space out waterings when growth slows, and make sure the pot drains well to avoid root rot.

3. 3Choosing Soil

   Good drainage matters more than anything, so a succulent or caudex-specific soil mix is the easiest choice. Avoid using plain garden soil on its own, since its high water retention raises the risk of root rot.

4. 4When to Repot

   Repot once roots fill the container, ideally during the active growing season, moving up to a slightly larger pot. Gently remove old soil from the roots and trim away any damaged sections before replanting in fresh mix.

5. 5Seasonal Care

   Cut back on watering and let the plant rest when growth slows down, which reduces stress on the plant. As temperatures drop, move it somewhere sheltered from cold and sudden temperature swings.

6. 6Enjoying the Blooms

   During the growing season it produces a steady succession of small pink to scarlet-red flowers, and consistent light plus steady care is the key to good flowering. No special aftercare is needed once blooms fade — just keep up regular watering and sun exposure.

7. 7Picking a Good Plant

   Look for a plant with a firm, plump caudex free of scars or soft spots, which makes ongoing care easier. Check the leaves for unusual discoloration or wilting before you buy.

Frequently asked questions about Jatropha cathartica

Q.Is it suitable for beginners?

A.Yes, Jatropha cathartica is generally considered a beginner-friendly caudex plant. As long as you follow basic watering and light guidelines, it's fairly forgiving to grow.

Q.How large does it grow?

A.The caudex can reach about 20 cm across and 30 cm tall. Each spring it sends up short stems from the caudex and unfolds its leaves. Growth rate and final size vary with growing conditions.

Q.What should I watch for in winter care?

A.Cut back on watering when growth slows and let the plant rest. Keep it somewhere sheltered from sudden cold or temperature swings.

Q.What do the flowers look like?

A.From spring to autumn, with a peak in summer, it bears small flowers about 12mm across in bright pink to scarlet, loosely clustered at the tips of long flower stalks.

Q.How often does it need repotting?

A.Repot once the roots have filled the pot, moving up to a slightly larger size during the active growing season. It doesn't need frequent repotting — just check on the plant's condition and decide accordingly.

Handy Growing Tools for Jatropha cathartica

Learn more about Jatropha cathartica in the encyclopedia

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