Outdoor Pinguicula grandiflora Leaf Curling: Sun or Water Issue?

Diagnosing Leaf Curl in Temperate Butterworts

A grower's Pinguicula grandiflora in a full-sun bog garden showed folding/curling leaves. They asked how to shade it.

Expert Assessment

Jacob Farin notes that at their nursery, P. grandiflora grows in full sun and develops a desirable bronze tinge. Leaf curling suggests water stress, not sun stress.

Immediate Action

• Ensure water tray is always filled. Soil must never dry out.
• If shading needed, shelter behind taller pots—complete shade unnecessary this time of year.

Follow-Up

If curling persists, provide specific growing conditions and a photo for further diagnosis.