40-Year Potted Grapefruit: Beating Recurring Spider Mites

40-Year Potted Grapefruit: Beating Recurring Spider Mites

Your decades-old grapefruit gets annual spider mite infestations with webbing and sticky honeydew. Drastic pruning isn't the answer—consistent management is.

Identify the Enemy

Spider mites: barely visible, two-spotted, produce fine webbing on leaf undersides and stems. Eggs cluster on leaf undersides. They thrive in hot, dry conditions.

Effective Control Protocol

1. Strong water spray: Blast leaf undersides to dislodge mites/eggs.
2. Soapy water spray: Cover all surfaces completely. Repeat every 3–5 days until clear.
3. Weekly maintenance outdoors: Water blast + soap spray weekly all summer.

Why This Works

Physical removal + suffocation breaks the cycle. Weekly summer treatment keeps populations low, preventing fall explosions when plant moves inside.

Don't Over-Prune

Only remove severely damaged foliage. The plant needs leaves for energy.

Expert advice from Tracy, houseplant specialist.