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To keep your basil plant growing, you need to give it the right balance of sunlight, water, and regular harvesting.
If you’ve been trying to keep your basil plant growing and it keeps turning yellow or getting leggy, you’re not alone.
Basil is one of the most rewarding herbs to grow, but it has a few non-negotiable needs that are easy to miss.
In this post, we’ll walk through exactly how to keep your basil plant growing strong, from the perfect watering schedule to the pruning technique that doubles your harvest.
Let’s dig in and get your basil thriving.
How to Keep Your Basil Plant Growing: The Core Essentials
To keep your basil plant growing, you have to start with the fundamentals.
Basil is a warm-weather annual that craves consistency, and when you get these basics right, the plant rewards you with lush, fragrant leaves all season.
Here are the non-negotiable steps to keep your basil plant growing at its best.
1. Give It Six to Eight Hours of Direct Sunlight
Basil is a sun worshipper, and to keep your basil plant growing, it needs a minimum of six hours of direct sunlight per day.
If you’re growing indoors, place it on a south-facing windowsill where it gets the most light.
Without enough sun, your basil will become leggy, meaning it stretches out with sparse leaves and weak stems.
If you notice your plant leaning toward the window, rotate it every few days so all sides get equal light.
For indoor growers who struggle with low light, a grow light set about six inches above the plant for 12 hours a day works wonders.
2. Water Consistently but Never Drown It
The number one killer of basil is either overwatering or letting it dry out completely.
To keep your basil plant growing, check the top inch of soil with your finger.
If it feels dry, water thoroughly until water drains out of the bottom of the pot.
If it still feels damp, wait another day before watering.
Basil hates soggy roots, so always use a pot with drainage holes.
A good rule of thumb: water every morning, but adjust based on the weather and humidity.
During hot summer days, you might need to water twice a day to keep your basil plant growing without stress.
3. Use Well-Draining, Nutrient-Rich Soil
Basil grows best in loose, loamy soil that holds moisture but drains quickly.
A high-quality potting mix enriched with compost is perfect for keeping your basil plant growing.
Avoid heavy garden soil that compacts easily, as it can suffocate the roots.
Every four to six weeks, feed your basil with a balanced liquid fertilizer diluted to half strength.
Too much fertilizer can make leaves taste bitter, so don’t overdo it.
Healthy soil equals healthy roots, and healthy roots are the foundation to keep your basil plant growing.
The Secret to How to Keep Your Basil Plant Growing Bushy and Full
If your basil looks tall and skinny with just a few leaves at the top, you’re missing the most important trick.
To keep your basil plant growing bushy and full, you have to prune it the right way.
Many people are afraid to cut their basil, but pruning is actually what forces the plant to branch out.
Here’s exactly how it works.
1. Pinch Off the Flower Buds Immediately
The moment you see tiny flower buds forming at the top of your basil, pinch them off right away.
Flowers signal that the plant is entering its reproductive stage, which stops leaf production.
If you let basil flower, the leaves will turn bitter, and the plant will focus all its energy on seeds, not on keeping your basil plant growing new foliage.
Check your plant every few days and remove any blooms with your fingers or sharp scissors.
2. Prune Above a Leaf Node
To keep your basil plant growing bushier, always cut the stem just above a pair of leaves.
This is called a leaf node, and it’s where new branches will emerge.
When you prune there, the plant sends out two new stems from that spot, effectively doubling your harvest.
Cut about a quarter inch above the node, and never leave a long, bare stub.
A clean cut at the right spot is the single best technique to keep your basil plant growing outward instead of upward.
3. Harvest Frequently for Continuous Growth
Don’t wait until your basil is huge to start picking leaves.
Regular harvesting keeps your basil plant growing because it removes mature leaves and signals the plant to produce more.
Start harvesting once the plant has at least three sets of true leaves.
Always pick from the top down, taking the largest leaves first, and never strip more than a third of the plant at once.
This regular harvesting method is the best way to keep your basil plant growing all summer long.
Common Mistakes That Stop How to Keep Your Basil Plant Growing
Even experienced gardeners make mistakes that cause basil to struggle.
To keep your basil plant growing, you need to avoid these common pitfalls.
Here are the biggest ones to watch out for.
1. Letting the Soil Dry Out Completely
Basil has shallow roots, so it dries out faster than you think.
If you let the soil become bone dry, the plant will wilt dramatically, and while it may recover, the stress can stunt growth permanently.
To keep your basil plant growing, never let the soil go completely dry.
Mulching the top of the soil with a thin layer of straw or bark can help retain moisture.
2. Growing in Too Small of a Pot
Basil roots need room to spread.
If you’re growing in a tiny pot, the roots become root-bound, which means they circle the bottom and can’t absorb water or nutrients efficiently.
To keep your basil plant growing, repot it into a container that’s at least 8 inches deep and 8 inches wide.
If you see roots coming out of the drainage holes, it’s time for a bigger pot.
3. Ignoring Temperature Drops
Basil is incredibly sensitive to cold.
Temperatures below 50°F will halt growth, and frost will kill it instantly.
To keep your basil plant growing, bring it indoors if you expect a cold snap.
If it’s in the ground, cover it with a frost cloth overnight.
The ideal temperature range for basil is between 70°F and 85°F.
So, How Do You Keep Your Basil Plant Growing Year-Round?
To keep your basil plant growing year-round, you’ll need to bring it indoors before the first frost.
Dig up a healthy outdoor plant or take cuttings from it, and pot them in fresh soil.
Place them in your sunniest window or under a grow light.
Indoor basil needs the same care as outdoor: lots of light, consistent moisture, and regular pruning.
The good news is that even in winter, you can keep your basil plant growing with just a little attention.
So, How to Keep Your Basil Plant Growing? It’s All About Routine
Keeping your basil plant growing isn’t complicated, but it does require consistency.
To keep your basil plant growing, give it at least six hours of sun, water when the soil feels dry, and prune above leaf nodes regularly.
Avoid letting it flower, and never expose it to cold drafts.
If you follow these simple steps, you’ll have an abundant supply of fresh basil all season long.
Remember, the more you harvest, the more it grows.
So get out there, pinch those leaves, and enjoy the endless supply of aromatic, homegrown basil.