Lophophora Care Sheet

Overview

Lophophora are slow-growing, compact cacti valued by collectors for their rounded form, woolly crown, subtle flowers, and characterful ageing. They are best grown with patience, restraint, and a very free-draining mineral compost.

Light

Lophophora prefer bright light, but they do not usually appreciate harsh, unfiltered sun all day, especially under glass. In the UK, they do well in a bright greenhouse, conservatory, sunny windowsill, or under quality grow lights.

Aim for strong light with some protection from the most intense midday summer sun. Too little light can cause stretching, pale growth, and a softer shape. Too much sudden direct sun can cause bleaching, yellowing, or corky scorch marks.

Compost & Drainage

Use a very free-draining cactus mix with a high mineral content. Avoid rich, moisture-retentive composts, as Lophophora dislike sitting wet around the roots, especially in cool conditions.

A suitable mix can include pumice, lava rock, horticultural grit, akadama, molar clay, coarse sand, and a small amount of sieved loam or compost.

Watering

Water sparingly and only when the compost has dried fully. During active growth in spring and summer, water thoroughly, then allow the pot to dry completely before watering again. In dull or cool weather, wait longer.

In autumn, reduce watering as temperatures fall. In winter, most plants should be kept dry or almost dry, especially if grown cool. Overwatering is the most common cause of problems.

Temperature

Lophophora enjoy warmth during the growing season. Good airflow and warm days help plants grow steadily. In winter, they can be kept cooler if dry. Avoid cold, damp conditions and protect plants from frost.

Feeding

Feed lightly during the growing season using a low-strength cactus fertiliser. A weak feed once every few waterings in spring and summer is usually enough. Avoid heavy feeding, as this can encourage soft, unnatural growth.

Potting

Use pots with drainage holes. Terracotta can be useful because it dries quickly, though plastic pots are also fine if the compost is very free-draining. Repot only when needed, as Lophophora are slow growers and do not require frequent disturbance.

After repotting, leave the plant dry for around one to two weeks before watering, giving any disturbed roots time to settle.

Flowering

Mature plants may flower during the warmer months when grown in good light. Flowers are usually small, delicate, and produced from the woolly crown. Regular flowering is encouraged by strong light, a healthy seasonal rhythm, and a dry winter rest.

Pests

Common pests include mealybug, root mealybug, spider mite, and fungus gnats in overly organic compost. Inspect plants regularly, especially around the crown wool, between ribs, and around the roots when repotting.

Seasonal Summary

• Spring: Gradually increase light and begin careful watering once temperatures improve.
• Summer: Main growing season. Water when fully dry and provide strong light with ventilation.
• Autumn: Reduce watering as temperatures and light levels fall.
• Winter: Keep dry or nearly dry, especially in cool conditions.

Final Notes

Lophophora reward patient growing. The best results usually come from strong light, mineral compost, careful watering, and a clear seasonal rhythm. Avoid pushing them too hard; compact, steady growth produces healthier and more attractive plants over time.

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