Sansevieria Pests: Identification and Prevention

Common Pests: Thrips, Spider Mites, Mealybugs

Sansevieria (snake plant) is generally resilient, but can occasionally suffer from pests. The most common are:

• Thrips: Tiny, slender insects that feed on leaf sap. They may cause silvery streaks or small black dots (excrement) on the leaves.
• Spider mites: Very small, often red or brown, and produce fine webbing. Leaves may show yellow speckles or dry patches.
• Mealybugs: White, cotton-like clusters found in leaf axils or along the stem. They suck sap and can weaken the plant over time.

Recognising Symptoms

• Discoloured spots (yellow, brown or silvery) on leaves
• Fine webbing, especially on the underside of leaves (spider mites)
• Sticky residue or black sooty mould (often from mealybugs)
• Visible insects or cottony clusters
• Stunted growth or leaf deformation

Check your Sansevieria regularly, especially if it is near other houseplants or during warm, dry periods.

Prevention and Hygiene

• Isolate new plants for at least two weeks before placing them with others.
• Wipe leaves gently with a damp cloth to remove dust and check for pests.
• Avoid overwatering and ensure good air circulation.
• Remove fallen leaves and plant debris from the pot and surrounding area.
• If you spot pests, isolate the affected plant to prevent spread.

When to Seek Professional Help

If pests persist after repeated manual removal or if the infestation is severe, consider consulting a professional or a local plant specialist. Avoid using chemical treatments indoors unless specifically recommended for houseplants and always follow label instructions.