
Companion plants for Knock Out
35 partners scored across pest control, nitrogen, root depth, shade and spacing.
Best partners
Coral BellsGreat pair- Coral Bells attracts Hoverflies, which prey on the Aphids and Thrips that attack Knock Out
- Knock Out draws Bees and Bumblebees and more that improve pollination for both
- Coral Bells acts as living mulch, keeping soil moist and weeds down around Knock Out
- Great pair
- Red Mustard attracts Hoverflies and Parasitic wasps, which prey on the Aphids and Thrips that attack Knock Out
- Red Mustard suppresses pests that trouble Knock Out
- Red Mustard acts as living mulch, keeping soil moist and weeds down around Knock Out
- Great pair
- Wasabina attracts Hoverflies and Parasitic wasps, which prey on the Aphids and Thrips that attack Knock Out
- Wasabina suppresses pests that trouble Knock Out
- Wasabina acts as living mulch, keeping soil moist and weeds down around Knock Out
- Great pair
- African Marigold attracts Hoverflies and Lacewings and more, which prey on the Aphids and Thrips that attack Knock Out
- African Marigold suppresses pests that trouble Knock Out
- Knock Out draws Bees and Bumblebees and more that improve pollination for both
- Great pair
- Knock Out draws Bees and Bumblebees and more that improve pollination for both
- African Violet acts as living mulch, keeping soil moist and weeds down around Knock Out
- Knock Out gives African Violet sheltering shade in the heat of summer
- Great pair
- Knock Out draws Bees and Bumblebees and more that improve pollination for both
- Christmas Cactus acts as living mulch, keeping soil moist and weeds down around Knock Out
- Knock Out gives Christmas Cactus sheltering shade in the heat of summer
- Great pair
- Knock Out draws Bees and Bumblebees and more that improve pollination for both
- Coral Bells acts as living mulch, keeping soil moist and weeds down around Knock Out
- Knock Out gives Coral Bells sheltering shade in the heat of summer
- Great pair
- Knock Out draws Bees and Bumblebees and more that improve pollination for both
- Foamflower acts as living mulch, keeping soil moist and weeds down around Knock Out
- Knock Out gives Foamflower sheltering shade in the heat of summer
- Great pair
- Knock Out draws Bees and Bumblebees and more that improve pollination for both
- Roseroot acts as living mulch, keeping soil moist and weeds down around Knock Out
- Knock Out gives Roseroot sheltering shade in the heat of summer
- Great pair
- Knock Out draws Bees and Bumblebees and more that improve pollination for both
- Shooting Star acts as living mulch, keeping soil moist and weeds down around Knock Out
- Knock Out gives Shooting Star sheltering shade in the heat of summer
- Great pair
- Knock Out draws Bees and Bumblebees and more that improve pollination for both
- Snowdrop acts as living mulch, keeping soil moist and weeds down around Knock Out
- Knock Out gives Snowdrop sheltering shade in the heat of summer
Also works well
Keep apart

Black Sage releases compounds that inhibit Knock Out

Black Walnut releases compounds that inhibit Knock Out

Fennel releases compounds that inhibit Knock Out
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