What Plants Repel Squash Bugs & Homemade Spray

Squash bugs can be a major nuisance for gardeners, but there are natural ways to protect your cucurbit crops without resorting to harsh chemicals. By using companion planting and homemade sprays, you can effectively repel these pests and maintain a healthy garden.

Companion Plants That Repel Squash Bugs

Several plants have natural properties that deter squash bugs. Incorporating these into your garden can create a protective barrier around your squash plants:

Aromatic Herbs:
- Mint
- Catnip
- Chives
- Garlic
- Dill
- Oregano
- Marjoram

Flowering Plants:
- Nasturtiums
- Marigolds
- Calendula
- Bee balm

Other Vegetables:
- Radishes
- Onions

These companion plants not only repel squash bugs but also attract beneficial insects that prey on garden pests[1][2].

Planting Strategy

To maximize the effectiveness of companion planting:

1. Intersperse repellent plants among your squash
2. Create a border of aromatic herbs around your squash patch
3. Plant nasturtiums as a trap crop to lure squash bugs away from your main plants

Homemade Squash Bug Repellent Sprays

For additional protection, try these simple DIY sprays:

Soap Spray:
- 1 teaspoon dish soap
- 1 teaspoon vegetable oil
- 16 oz water

Coffee Grounds Spray:
- 2 tablespoons coffee grounds
- 2 cups water

Instructions:
1. For the soap spray, combine all ingredients in a spray bottle and shake gently
2. For the coffee spray, boil the grounds in water, cool to room temperature, and strain
3. Apply to the undersides of squash leaves twice a week
4. Reapply after rain[4]

Additional Tips for Squash Bug Control

- Remove garden debris where adult bugs can hide
- Use row covers on young plants
- Hand-pick and dispose of bugs in soapy water
- Plant resistant squash varieties like butternut or acorn[1][4]

Natural Predators

Encourage natural predators of squash bugs in your garden:

- Tachinid flies: Plant carrots, dill, or parsley to attract these beneficial insects
- Bigeyed bugs: Grow sunflowers to attract these predators
- Damsel bugs: Plant radishes, alfalfa, clover, fennel, or lavender[2]

The Blue Hubbard Squash Trap

Consider planting blue Hubbard squash as a trap crop:

1. Plant blue Hubbard squash 2-3 weeks before your main crop
2. Place trap plants 3-8 feet away from protected crops
3. Once squash bugs gather on the trap crop, remove and dispose of the infested plants[2][3]

By combining these natural methods, you can significantly reduce squash bug populations in your garden and enjoy a healthier harvest of cucurbits.

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