Beetles, Grubs & Ants in Saudi Garden: Safe Control Options

Leaf-feeding beetle

A gardener in Abha, Saudi Arabia battles multiple pests: brown/black/white beetles eating leaves, white grubs in potted plant soil, ants nesting in pots, spiders on plants. Prefers home remedies.

Integrated Approach

For beetles on foliage:

• Rotenone powder (derivative of tropical plant): Organic, non-toxic to humans/pets, apply up to 1 day before harvest. Reapply after rain. 48-hour dry window needed.
• Sevin (carbaryl): Highly effective but kills bees. Dust when bees aren't foraging; wash off later.

For grubs in pots:

• Repot with fresh, sterile potting mix. Inspect roots, remove grubs.
• Beneficial nematodes (Heterorhabditis) watered into soil—organic, grub-specific.

For ants in pots:

• Submerge pot in water 20 mins to flood them out.
• Diatomaceous earth on soil surface.
• Ant baits (borax-sugar) near pots, not in them.

Spiders: Beneficial—leave them. They eat pests.

Start with organic options. Healthy plants in good soil resist pests better.