Keeping Houseplants Pest-Free: Simple Tips for Thriving Plants
By Justin Hancock for Costa Farms
Whether you have a trendy Philodendron, a no-fuss Snake Plant, or a charming little Cactus, keeping your plants free from pests is essential for their well-being. Fortunately, preventing houseplant pests is simpler than you might think. Here are some tips to help you out.
Healthy Plants Resist Pests
Like you, a well-nourished and well-rested houseplant is better equipped to fend off invaders. This may be the most crucial tip for preventing houseplant pests. A stressed plant practically sends out signals that make it more attractive to pests.
What does a healthy houseplant look like?
Light: Is your plant getting the right amount of light? Too little or too much can stress it out.
Water: Are you overwatering or underwatering? Both can lead to root problems and weaken your plant.
Air Circulation: Low air flow can create a breeding ground for some pests.
Your First Line of Defense: Inspecting New Plants
Give new plants a thorough examination before bringing them into your home. This is important in preventing pests from becoming a big issue.
Look for Four Things:
The Leaves: Are there tiny dots, sticky residue, webbing, or any unusual bumps? Examine the undersides, as well as the tops of the leaves. Some pests prefer hanging out underneath the leaf. Pay special attention to the junctions of leaf and stem.
The Stems: Run your fingers along the stems. Are there visible insects or sticky honeydew?
The Soil Surface: Watch for flying insects, crawling critters, or signs of mold. If you’re comfortable doing so, slip the plant out of the pot so you can see its roots. Healthy roots are firm and white. If the roots are mushy or the wrong color, there may be a problem.
The Pot: Are there any pests on or underneath the pot?
This scouting can save you time down the line. It's so much easier to deal with a few pests on a single plant than a full-blown infestation across multiple plants.
Quarantine New Plants
Not confident in your pest-scouting skills? Separating new houseplants for a couple of weeks helps ensure they’re not hiding pests that could spread to the rest of your collection.
How to quarantine:
Pick a location away from your other houseplants. A different room is best, but the other side of a room can work too. A terrarium or glass case works really well, too.
For the next 2-4 weeks, pay closer attention to your new plant. Water it as usual, provide the right light, and inspect it regularly for any signs of pests.
If you spot any pests during this quarantine period, treat that single plant without risking an infestation of your entire indoor collection. Once the quarantine period is over and you’re comfortable your new plant is pest-free, you can incorporate it with your other plants.
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