Troubleshooting Hens and Chicks: Mites, Bugs, and Etiolation

Identifying the Problem

A gardener reached out about a batch of hens and chicks (Sempervivum) planted in two large pots. The plants developed white, mite-like insects and small black bugs. Additionally, two rosettes began growing tall and spindly instead of maintaining their typical compact, rounded form. The grower, experienced with these succulents for years, had never encountered such issues.

Pest Management

The white mites and black bugs likely migrated from nearby infested plants. Common culprits include spider mites, aphids, or mealybugs. Treatment options include:

• Insecticidal soap or neem oil applied thoroughly, especially in leaf crevices.
• Systemic granular insecticide for longer protection.
• Isolating affected pots to prevent spread.

Etiolation: The Stretching Issue

The upright, elongated growth is a classic sign of etiolation – insufficient light. Hens and chicks require full sun (at least 6 hours daily) to stay compact. In low light, they stretch toward the light source, becoming weak and pale.

Solution: Move the pots to a sunnier location. If indoors, supplement with a grow light (12–14 hours daily). The stretched rosettes won't revert, but new offsets will grow normally once light improves.

Preventive Care

• Use gritty, well-draining soil (cactus/succulent mix amended with pumice or perlite).
• Water only when soil is completely dry; avoid overhead watering.
• Inspect new plants for pests before introducing them.
• Provide maximum sunlight year-round.

With corrected light and pest control, the colony should recover and produce healthy new chicks.