There are so many different types of pruners available for a variety of gardening tasks. But when it comes to small pruning jobs like deadheading or cutting suckers off of tomato plants, you don’t always need a pair of fancy pruners. I recently discovered a handy little pruning tool known as a thumb knife that’s perfect for exactly these types of tasks.

Depending on the type of pruners you need, you can spend anywhere from around $10 to $100. If you’re a frugal gardener like me, you try to stay on the low side of that range, especially if you only have minimal pruning needs. Maybe all you grow is a container of tomatoes on your patio or just a few flowers in your front garden beds, so you don’t need the same pruners that gardening experts use. You just need something that will help you quickly clean up your plants.

That’s where this thumb knife from Amazon comes in. Thumb knives are affordable, easy to find online, and help you snip off faded flowers or unwanted suckers in just a few seconds. Plus, they’re pretty fun to use! Here’s everything you need to know about using thumb knives and where to find them.

What Is a Thumb Knife?

Thumb knives are a clever and handy pruning tool that you can use to easily cut off suckers from tomatoes or to deadhead flowers that are done blooming. You can also use them to cut fresh flowers from your cutting garden to create a bouquet or arrangement.

A thumb knife is like a tiny glove for your thumb, typically made of silicone, with a small blade attached. There are thumb knives that have the blade attached to the tip of the thumb like a fingernail or there are other types, like these thumb knives from Amazon, that have the blade coming out of the underside of the thumb at a 90° angle. Both kinds serve the same purpose and are easy to use for small pruning jobs.

Thumb knives also come with a protective sheath for your index finger. This protects your finger from the blade as you use it to prune away any unwanted stems or faded blossoms. The protective sheath is sometimes made from silicone or a thick fabric that resists the blade and keeps your finger safe.

How to Use a Thumb Knife

Pruning plants with a thumb knife is quick, easy, and – honestly – fun to do! Simply slip the silicone knife over your thumb and the protective sheath over your index finger. Then pinch the faded flower, sucker, or whatever stem you want to prune in between the thumb knife and your index finger with the protective covering. The process is very similar to pinching plants, which can encourage more blooms and help plants form a denser, stronger shape.

Never use a thumb knife without the protective sheath for your index finger. The blade can easily cut your finger. It’s also best to use a thumb knife only on soft stems. A thumb knife is ideal for pruning suckers off of tomato plants or for deadheading soft-stemmed flowers like zinnias.

This is not the right tool for woody plants. You will have to use too much force to get through a woody stem and this puts you at risk of accidentally cutting your index finger. So when it comes to pruning your hydrangeas or even deadheading rose bushes, opt for a more traditional pruner like these Felco pruning shears from Amazon with a cult following. Or these affordable pruners from Fiskars are a favorite of our team of gardening experts and readers.

Explore More Pruning Tools

If you’re looking for other types of pruners for small jobs, there are a few different options that are similar to the thumb knife. These small pruners below are also perfect for quick deadheading and little pruning jobs in a patio garden or for windowsill plants.