Category: Annuals

I love petunias! Some might even call me an addict. While there are those who think they are too pedestrian, the truth is they are one of the best choices for sunny Colorado gardens. Petunias are versatile. They can be used in hanging baskets, planters, borders and in mass plantings. They thrive in the summer sun and heat. They tolerate a little frost in early spring and fall, making them ideal for mountain gardens, too. With regular fertilization, they will bloom non-stop until a fall freeze. They’re also water-wise plants, preferring their soil dry moderately well between water applications.  An infinite choice of colors exist for our planting pleasure.  No other annual packs as much bang for the buck.

If you haven’t caught the Wave yet, you’ve been missing out. The original Wave petunias reach 6” tall and create a 36” carpet of blooms that hugs the ground. Easy Wave petunias are mounding plants, reaching 12” tall and spreading to about 30”. Shock Waves have petite blooms, grow to 10” tall and spread up to 30” in diameter. Tidal Wave petunias give new meaning to the word “voluptuous.” When planted every 12”, they create a hedge of flowers that can reach up to 48” tall. These are ideal for large pots and planters like wine barrels.

My favorite series of petunias is Sanguna. The colors are uniquely vivid and their flowers are large. Their spreading habit makes them great candidates for use in border plantings, and also allows them to be used as trailing plants from hanging baskets and planters. They are resilient to wind, rain and most anything else Mother Nature dishes out. There are new colors in the series this year. Be sure to look for Sanguna Radiant Blue, Sanguna Radiant Rose and Sanguna Picotte Punch. One of the more unique colors is Sanguna Atomic Blue, with its iridescent, nearly neon blue blooms.

The oversized, 3″ grandiflora blooms of Hort Couture’s Panache series of petunias should be on everyone’s list of plants to grow. There are some incredible colors. Venetian Red is one of the most stunning red trailing petunias.   And we can’t forget Panache Hell’s Bells.  Spectacular orange blooms really set this one apart.   If you’re a Bronco’s fan, it’s a must-have plant to go with your favorite blue salvia.

There are some special petunias that have been hybridized with calibrachoa. These “SuperCal” petunias combine the best traits of both plants. They are vigorous trailing plants with 2” blooms. They aren’t sticky and they shed their own dead flowers. That’s right. No more sticky fingers from dead-heading.

All petunias are not created equal. There are hundreds from which to choose. Knowing the traits of a few varieties can be helpful when trying to select the right petunia for your purpose. Most petunias can be classified as trailing, mounding or spreading. If you consider what you desire as the end result for your planting, you’ll have no trouble finding your perfect petunia.

Hanging baskets can be a quick and easy way to add color and style to a patio or porch, but it’s important to select the right plants for the spot you have chosen. A basket of petunias is never going to be happy in a shady nook, and tuberous begonias will crisp up in the afternoon sun. When choosing plants, you also want to consider how easy it will be to water. If watering the basket is going to be a challenge, you can help compensate by choosing plants that can take dry conditions, or choose larger pots or self-watering pots and soil amendments that will help you maintain moisture around the root zone.

Available sunlight is the starting point for all plant selection, so it’s important to determine the number of hours your plants will receive in the location you plan to plant. Do you have a northern exposure or heavy shade from a tree? It doesn’t matter if “it’s really very bright!”—you will have poor performance from sun lovers like petunias. Our visual perception of light isn’t necessarily an accurate measurement of available light to the plant.

Full sun is 6+ hours of direct sun that will shine on the foliage of your plants, each day. These are going to generally be southern, western, or south-western sides of the house, and not tucked back under an awning. If it’s a spot you want to avoid in the middle of the afternoon, odds are good that it’s the perfect spot for a basket of upright geraniums or calibrachoa.

Easy plants for sunny baskets include petunias, scaevola, calibrachoa, trailing portulaca, lantana, trailing verbena, and bidens. A blend of petunias, verbena, and bidens will provide a mix of both colors and textures with long-blooming flower power. An easy care combo for full sun could include a salmon geranium, 3 ‘Bombay Blue’ scaevolas, and 3 light-yellow calibrachoas.

Part-Sun is less than 6 hours of sun per day, which typically amounts to morning sun only. These are usually eastern exposures or an area that would have all day sun, if it weren’t for that gorgeous maple planted two owners ago. An area with dappled shade for the full day can be counted as part-sun for planting purposes.

Easy plants for morning sun include New Guinea impatiens, torenia, many begonias, ivy geraniums, and bacopa. Bacopa can sometimes stop blooming at the peak heat of the summer, but the foliage remains as a lovely cascade and will bloom again once the temperatures cool a bit in late summer and fall. Pansies can also be included in this group, but like bacopa (and most of us!), high temperatures induce a resting phase. A quick and lovely part-sun combo might include a few yellow or salmon ‘Mocca Mix’ begonias, a few ‘Gold n Pearls’ bacopa, and a 4-pack of deep blue torenia.

Full Shade is quite literally no direct sun in a day. Common shade zones are under a porch or patio awning, under dense tree shade, or in the shade of buildings.

A basket of shade-loving plants could include pansies, compact or trailing coleus, bacopa, begonias, fuchsia, and traditional impatiens. For a quick combo, try 3 Illumination begonias and 3 white bacopas.

With all basket plantings, it is important to monitor the growth of your plants so that you don’t end up with one vigorous plant taking over the entire pot (I’m looking at you, trailing petunias!). Mild, selective pinching and pruning throughout the summer will encourage new growth from the top of the basket and help keep your baskets looking full and fresh.

A word about feeding your plants – Yes! We’re asking our annuals to entertain us with beautiful blooms all summer long, through any sort of weather or challenge that comes their way. They can’t do that without regular fertilization. Try Jack’s Classic Blossom Booster for the majority of your flowering plants, outdoors and indoors. Petunias prefer a special diet, so try Jack’s Classic Petunia Feed. Follow the instructions on any fertilizer you select.

Enjoy!