Act now and check plants regularly to protect your tomatoes from major damage.
They are the larvae of the five-spotted hawk moth and can grow up to 4 inches long, with white diagonal stripes and a curved horn-like tail (they are harmless to humans but can do a lot of damage to tomato plants).
Despite their size, hornworms blend in well with foliage, making them hard to spot until damage appears — usually chewed leaves, missing stems, and bite marks in tomatoes. If you see these signs - check your plants' leaves and stems thoroughly (they're very hard to spot!), and remove.
How to control tomato hornworms
- Examine all parts of your tomato plants daily (above and below leaves and on stems of leave and plant) and remove any hornworms found (see below).
- Hand pick hornworms off plants and drop them into soapy water or cut in half with a scissors and discard if you don't want to handpick (gross but effective).