Have you ever peeled back the leaves on a bunch of homegrown kale to discover hundreds of scaly little bugs? Those are aphids and the sight of them will make you throw away your kale and order pizza instead. And anyone who’s had a houseplant infested with spider mites will have been tempted to chuck said plant, pot and all, straight out the window. The damage they cause can eventually kill the plant, and the mites spread quickly.

Adding a few houseplants is a foolproof way to brighten up your decor while adding a aura of serenity to your space. Unfortunately, houseplants can get pricey, especially for big showstoppers or unusual varieties. Let’s be honest: it’s tough to pull out your credit card when you’re not sure a plant will actually survive your apartment’s environment, or the blunderings of your black thumb. But that doesn’t mean you have to live without indoor greenery.

I’m pretty minimalist when it comes to gardening tools and plant supplies. Plants have simple lives: Sun, water, soil, and room to grow are all they need, and I appreciate that I don’t need to spend much money to keep them growing contentedly. However, there are a few houseplant accessories that are really nice to have, and the best part is that they don’t cost a bunch of money. Here are six items under $20 that will make your plants happy.

Although it seems so straightforward, watering your houseplants can be a surprisingly tricky chore. For a lot of people, the issue isn’t remembering to fill up the watering can once or twice a week—it’s figuring out how much water your plants really need. Enter self-watering planters. Your statement Monsteras and lemon trees will feel right at home in this modern square planter.

Let’s just take a moment to appreciate hanging planters. They’ve been popular for who knows how long, and show no signs of going away any time soon for good reason: They add a certain something to your space, no matter what the decor style, and are practical for a number of reasons. To start, they help you make the most of limited sunlight. I have exactly one sunny window in my otherwise dim apartment, so all of my plants need to share.

Many houseplants hunker down for an extended period of rest, or dormancy, during the winter months. They’ll stop flowering and growing new leaves. Some species will drop leaves (even all of their leaves like shamrock plants) and that’s okay! You haven’t killed it. It’s getting ready to rest, just like trees and plenty of garden plants.

What is it about thumb-sized terrarium plants that makes me clasp my hands together and coo? If you’re in the market for a truly small plant, consider one of these diminutive options.

There's ALWAYS room for another one of these.