Pests in Your Garden? Experts Say These Are the Problem Plants You Should Remove ASAP

If you’ve been battling bugs in your backyard garden and losing the fight, the problem might not be what you’re doing wrong — it might be what you’re growing. Some of the most popular plants in home gardens are basically rolling out a welcome mat for aphids, beetles and other unwanted visitors.

Here’s the good news: once you know which plants are drawing pests in, you can take action this weekend to get ahead of the damage. Let’s walk through the biggest offenders — including one that might genuinely surprise you.

Your Tomatoes Are a Pest Buffet

If you’ve noticed tiny clusters of insects on your tomato plants or mysterious holes in the leaves, you’re not imagining things. Tomatoes are extremely productive, but they’re also pest magnets.

The usual culprits include aphids, whiteflies and hornworms. Why do they love your tomatoes so much? It comes down to the plant itself. Tomato foliage is nutrient-rich and gives off strong plant volatiles — essentially, scents that act like a dinner bell for sap-sucking insects. On top of that, the dense canopy of a mature tomato plant creates a humid microclimate underneath the leaves, and pests absolutely love that warm, moist environment.

So if your tomato plants look like they’re hosting a bug convention, now you know why.

Those Holes in Your Cabbage? Here’s the Explanation

Brassicas — that’s your cabbage, kale and broccoli — are major pest “host crops.” If you’ve been finding ragged holes in your cabbage leaves, the likely suspects are cabbage worms, aphids and flea beetles.

These aren’t minor nuisances, either. They can wreck a harvest fast.

Seed to Spoon app founder Carrie Spoonemore tells The Spruce: “Growing cabbage is rewarding yet difficult, due to pests like cabbage worms and harlequin bugs. These pests can quickly decimate cabbage plants if not managed properly.”

If brassicas are a staple in your garden, keeping a close eye on them is essential — these pests don’t wait around.

The Marigold Myth That Could Be Backfiring on You

Here’s the one that catches most weekend gardeners off guard. You’ve probably heard that marigolds are a natural pest repellent — maybe you even planted a border of them around your vegetable beds for exactly that reason. But the truth is more complicated.

Research shows marigolds have a dual effect. Yes, they can repel some nematodes. But they can also attract spider mites, slugs and aphids in dense plantings. So if you’ve packed marigolds tightly around your garden and you’re still seeing pest problems, those cheerful flowers might actually be part of the issue — not the solution.

This doesn’t mean you need to rip out every marigold. But it’s worth knowing that their reputation as a pest-proof border isn’t the full story.

Roses: Beautiful but Bug-Prone

Roses are one of the most documented pest-attracting ornamentals out there. The common pests they draw in include aphids, spider mites and Japanese beetles.

The reason? Roses produce tender new growth with high sap content, which equals an easy feeding source for insects. And once aphids get established on your roses, they spread quickly to nearby plants — meaning your rose bushes can become ground zero for a garden-wide infestation.

If your roses sit close to your vegetable beds, that proximity could be compounding your pest troubles.

Watermelons and Grapevines Are Trouble Too

It’s not just the usual suspects. If you’re growing watermelons, you may already know they can be finicky. Spoonemore tells The Spruce, “Large fruits like watermelons are another challenging plant for home gardeners to grow and care for. They are not only temperamental in their growing requirements, but also attract a range of pests that can affect their development and yield.”

And if you have grapevines, there’s a newer threat to be aware of. Lisa Milbrand says in Real Simple, “Grapevines can be a favorite of pollinators like birds and bees, but it’s also attractive to a brand new plant pest, the spotted lanternfly. The nymphs and adult lanternflies feed on the sap of the grapevines, not only damaging your vines (and your yield), but leaving behind a sticky residue that can cause sooty mold to develop on your plants.”

What You Can Do This Weekend

Knowing which plants attract pests is half the battle. The key takeaway here isn’t necessarily to yank everything out of the ground — it’s to understand why your garden is attracting bugs so you can respond smarter.

Start by inspecting the plants listed above. Check under leaves for aphids and whiteflies. Look for holes in brassica leaves. Examine your marigold plantings — if they’re dense and clustered, consider thinning them out. And pay attention to spacing between your roses and vegetable beds, since aphids that establish on roses can jump to nearby crops.

Your garden doesn’t have to be a pest paradise. Sometimes the fix is simpler than you think — it just starts with knowing what you’re dealing with.

This article was created by content specialists using various tools, including AI.