Coleus is one of the most stunning foliage plants you can grow. Unlike many garden favorites that rely on flowers for their beauty, coleus steals the show with its spectacular leaves, featuring combinations of deep burgundy, bright lime green, pink, red, purple, yellow, and even nearly black shades.

The plant shown in the image displays the classic beauty of coleus, with richly colored leaves edged in vibrant green. However, many gardeners notice that as summer approaches, their coleus begins to lose its intensity, becoming leggy, faded, or less colorful than expected.

June is a crucial month for coleus care. The actions you take now can determine whether your plants become lush, colorful masterpieces or disappointing, washed-out specimens.

Here are the 9 most important things you should do this June to keep your coleus thriving and bursting with color.

1. Give Your Coleus the Right Amount of Sunlight

One of the biggest mistakes gardeners make is exposing coleus to too much direct sun.

While some modern varieties tolerate more sunlight than older types, intense afternoon sun can still cause:

Faded colors
Scorched leaves
Brown edges
Stressed plants

Ideal Light Conditions

Morning sun
Bright filtered light
Partial shade during hot afternoons

The right balance of light helps produce the richest and most vibrant leaf colors.

2. Pinch Back Growing Tips

June is the perfect time to encourage bushier growth.

Without regular pinching, coleus can become:

Tall
Thin
Leggy
Less attractive

How to Pinch Properly

Using your fingers or clean scissors:

Remove the top inch of new growth.
Pinch just above a leaf node.
Repeat every few weeks.

This encourages the plant to produce multiple side shoots, creating a fuller appearance.

3. Remove Flower Spikes Early

The image shows flower spikes beginning to emerge from the plant.

While the flowers are attractive, allowing coleus to bloom extensively often reduces foliage quality.

Once flowering begins, the plant shifts energy away from leaf production.

What to Do

Cut flower spikes as soon as they appear.

Benefits include:

Larger leaves
Brighter colors
Bushier growth
Longer-lasting plants

Many experienced gardeners remove flowers throughout the growing season.

4. Feed with a Balanced Fertilizer

Coleus is a fast-growing plant and benefits from regular feeding.

However, overfertilizing can create excessive green growth and reduce color intensity.

Best Fertilizing Schedule

Apply:

Balanced liquid fertilizer every 2–4 weeks
Slow-release fertilizer according to package instructions

Avoid excessive nitrogen, which may dilute the vivid leaf coloration.

5. Keep the Soil Consistently Moist

Coleus dislikes extremes.

Both drought and soggy soil can stress the plant.

Signs of Underwatering

Drooping leaves
Crisp edges
Reduced color

Signs of Overwatering

Yellow leaves
Root rot
Wilting despite wet soil

Aim for evenly moist soil that drains well.

6. Refresh Container Soil

The plant in the image is growing in a container, where nutrients become depleted faster than in garden beds.

June is an excellent time to:

Add fresh compost
Replace the top few inches of soil
Improve drainage

This gives the roots access to fresh nutrients just as summer growth accelerates.

7. Protect Against Extreme Heat

As temperatures rise, coleus may suffer from heat stress.

Symptoms include:

Curling leaves
Color fading
Sunburn spots

Heat Protection Tips

Move containers to partial shade.
Water during early morning.
Apply mulch around the soil surface.
Avoid placing pots against hot walls.

A little protection during heatwaves can make a dramatic difference.

8. Watch for Pests

Warm weather encourages common coleus pests such as:

Aphids
Spider mites
Whiteflies
Mealybugs

Inspect the undersides of leaves regularly.

Natural Control Methods

Strong water spray
Insecticidal soap
Neem oil treatments

Catching infestations early prevents major damage.

9. Take Cuttings for More Plants

June is one of the best months to propagate coleus.

A single healthy plant can produce dozens of new plants.

Simple Propagation Method

Cut a healthy stem 4–6 inches long.
Remove lower leaves.
Place the cutting in water.
Wait for roots to develop.
Plant in moist potting mix.

Within a few weeks, you’ll have new coleus plants ready for containers, borders, or gifts.

Bonus Tip: Clean Up Damaged Leaves

Removing old or damaged foliage instantly improves appearance and encourages fresh growth.

Regular grooming helps:

Improve airflow
Reduce disease risk
Highlight colorful new leaves

A few minutes of maintenance each week keeps coleus looking its best.

Common Reasons Coleus Loses Its Color

If your coleus isn’t producing vibrant foliage, the cause is usually one of these:

Too much direct sunlight
Insufficient light
Lack of nutrients
Excessive flowering
Water stress
Heat damage
Overcrowding

Correcting these issues often restores color within a few weeks.

Final Thoughts

Coleus is one of the easiest and most rewarding plants to grow, but June is a pivotal month for its development. By pinching growth tips, removing flower spikes, providing proper moisture, protecting against heat, and feeding wisely, you can dramatically improve the intensity of your plant’s colors.

The beautiful coleus shown in the image already displays striking foliage, but with the right June care, those leaves can become even more vivid and spectacular throughout the summer. Follow these nine essential steps, and your coleus will reward you with a dazzling display of color that lasts until the first frost.