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How To Keep Your Wave Petunias Blooming And Booming!

It is hard to beat the color and beauty of wave petunias blooming in all their glory!

Wave petunias are a perfect choice to add showy color to pots, planters and hanging baskets. And, they work incredibly well when directly planted into flowerbeds too.

Their bright trumpet-shaped flowers form and bloom in near staggering numbers on plants and vines that can grow to equally incredible lengths and size.

Wave petunias can be found in 3 distinct varieties – spreading, trailing, or mounding.

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And although all three fill a space a bit differently, they can all be used with great success for containers, hanging baskets, or open bed space planting.

But perhaps best of all, waves are one of the easiest, low-maintenance annual flowers you will ever grow. Unlike traditional petunias, they don’t even require deadheading spent blooms to keep producing more.

wave petunias blooming
Unlike traditional petunia plants, wave petunias do not require removing the spent blooms to promote new blooms.

And with just the few key tips found below, you can keep your wave petunias blooming strong from early spring – right up until the first hard frost.

How To Keep Wave Petunias Blooming Strong! The Simple Keys To Success

When it comes to wave petunia care, there are four simple keys to success. And it all starts with proper sunlight.


Although wave petunias will tolerate some shade, they prefer full sun. And the more sun, the better!

Make sure your waves get at least 8 hours of full sun each and every day to promote maximum growth and blooms.

petunias in the sunlight
To keep wave petunias blooming, the more sunlight, the better.

And don’t worry about excess heat. As long as waves are watered adequately, they can tolerate the hot sun and humidity without any issues at all.


When it comes to watering, it’s all about keeping plants hydrated, but not saturated.

To keep wave petunias blooming, they do need frequent watering. But too much watering can lead to soggy roots, and a weak plant.

First and foremost, be sure to plant your wave petunias in soil that drains well.

If you are placing in pots, containers or hanging baskets, use a lightweight, high quality potting mix.

If planting directly into the landscape, add in plenty of compost at planting time to promote better drainage.

watering to keep wave petunias blooming
Petunias need adequate water to flourish and thrive.

Check the soil daily with the top inch or so of your finger. If the soil is completely dry, it’s time to water.

However, if your foliage begins to turn yellow, it is a sure sign that the plant’s roots are probably waterlogged and you are watering too often.

Fertilizing – A Big Key To Keep Wave Petunias Blooming

More than anything else, fertilizing is a must to keep plants blooming.

No matter how rich your potting soil or garden soil is, petunias, (or any annual flower for that matter) require a constant supply of nutrients to produce those massive amounts of blooms and flowers. See : 4 Natural Organic Fertilizers To Power Plants

To keep wave petunias blooming strong, plants should be fertilized lightly every 7 to 10 days.

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The key word is lightly.

Smaller but more frequent doses are better at keeping a slow and steady supply of nutrients coming to the plant. And to keep wave petunias blooming constantly, slow and steady works wonders.

Too much at once causes excessive growth above and below ground, leading to root-bound plants that become all leaves, and no blooms.

Water soluble and slow release granular fertilizers are two of the best choices when it comes to powering annuals such as wave petunias. (See : Jobes Organic Fertilizer)

Space To Grow

And last but not least, wave petunias need space to thrive. Above ground, and more importantly, below.

The minute a wave petunia’s roots run out of space and become root-bound, the plant will start to show signs of distress.

root bound petunia plant
Root bound plants can’t get the required nutrients and water they need to survive.

If potted waves start to outgrow their containers by mid-summer, re-plant them into larger containers to keep them going.

And if they become too big, simply plant them directly into the flowerbeds in your landscape!

You will be amazed at how it rejuvenates the entire plant – and adds an instant splash of huge color to your flowerbeds.

Here’s to keeping your wave petunias blooming all summer long!

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