These usually have an upright, mounded form, typically growing 15 to 24 inches tall and spreading up to 36 inches.Ĭascading grandiflora varieties are available too, including those in the Cascade or Super Cascade series as well as the Diamond series, and the Explorer series which doubles as a ground cover. They’re big and showy, between three and five inches across. Love big, splashy blooms in vibrant colors? Grandifloras don’t typically produce as many flowers as the other types, but they make up for this in size. Here, we’ll cover the basics in order from largest to smallest flower size, and note some recommended options for each that you might like to grow at home. You may also come across specific series or cultivars that feature a different growth habit or stature than what is typically expected – plants with a compact growth habit and large or particularly abundant flowers, for example. Some overlap exists, and you may find a certain series of petunia cultivars described within two different groupings, or a different group altogether, when you conduct your search for plants at the nursery. It’s important to remember, however, that we’re dealing with hybrids, and these types are not organized according to the usual tenets of botanical taxonomy. Additional types are also noted within a few of these broader groupings. The five categories described below are organized according to each type’s growth habit and the size of its flowers. They attract pollinating insects and hummingbirdsīeyond that, there’s a bit of variety within the genus, and plant breeders continue to expand on this, developing new and exciting cultivars that feature bold and beautiful blooms, a dwarf habit, disease resistance, and other features.They have colorful trumpet-shaped flowers.They’re only winter-hardy in Zones 9 to 11, so most North American gardeners grow petunias as annuals.Īll varieties have these traits in common: Each type has distinct merits and all of them are standouts in the proper growing environment. You may have been missing out on a variety that would work particularly well in an overlooked part of the garden or landscape, or one that could grace a container or hanging basket in style.Īllow us to introduce five unique categories of petunias. Certain types of petunia feature extra-large double blooms, for example, or a spreading habit that will cover bald spots in the landscape.Īnd these popular ornamentals can anchor or complement many different garden and landscape styles, depending on which type you choose.Īll of them are long-blooming and relatively easy to grow and care for, so it’s okay to just buy the first bedding plants you see if you wish, or grow the same cultivar you like to start indoors from seed every winter.īut you owe it to yourself to discover the advantageous traits within different petunia groups, in terms of their flower characteristics and the expected growth habit for each type. But the variety extends beyond those eye-popping hues and patterns, and new cultivars are being introduced all the time.Ĭategories have been developed to distinguish one from the next based on growth habit and characteristics of the flowers. Options with alluring and unique foliage colors or variegation are available as well. If you buy from one of our links, we may earn a commission.
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