LITTLE BUGGER
Hornworms might look harmless, but if left unchecked, these large green caterpillars can cause serious damage to any and all nightshade plants.
They are known to have huge appetites (remember The Very Hungry Caterpillar book?) and can strip a tomato plant of its leaves overnight.
If you notice big chunks of growth missing or black droppings on your plant, you likely have a hornworm or two crawling around!
REMOVAL METHODS
PROTECTION IS KEY
It's important to know that hornworms eventually transform into large moths that play a vital role in pollination. Because of this, we recommend trying all gentle removal methods possible before a harsh solution.
The options below focus on protecting your plants while also preserving these creatures to allow nature to do its thing.
HANDPICK
The easiest way to deal with hornworms is to gently pick them off one by one. Make sure to check all of their hiding spots like under the leaves and along the stems.
The key here is to place them far away in another area of your yard or garden to ensure they won't find their way back.
Hornworms pose no threat to humans. They are not toxic and will not sting you. Their distinct "horn" is actually a soft appendage, not a stinger!
RINSE WITH WATER
If you're a little squeamish about picking them up by hand, try using a strong water spray to knock hornworms off your plant.
If possible, spray them off in an area that is far away from where you usually keep your nightshade plants to ensure they will not return.
SACRIFICE A PLANT
If you have the space and means, you can have a separate nightshade plant dedicated to hornworms.
The idea is if you spot a hornworm on your crop, you can then handpick it and relocate it to the "sacrificial" plant for it to feed on instead.
This gives them a food source while keeping them off the plants you want to protect.
BASIL PLANTING
Basil has a strong scent that can confuse hungry hornworms looking to feast on your nightshade plants.
By planting basil around the plant you want to protect, you may be able to deter them from crawling around.
Note: This is more of a preventative method than a solution.
BENEFICIAL WASPS
This method involves introducing certain plants that will attract parasitic wasps to naturally control hornworms.
To encourage these helpful insects, try planting some of their favorite flowers or herbs nearby, such as:
⊹ Marigolds
⊹ Dill
⊹ Borage
⊹ Fennel
If you notice a hornworm covered in tiny, white bumps it means the wasps are already doing their part!
