Despite flaunting flowers frequently the size of dinner plates, dahlias (Dahlia spp.) Do not look impressive with their blooms face down in mud. Due to hollow stems and top-heavy growth, dahlias have a propensity to tumble. Therefore any dahlia that reaches a height of over 3 feet must have some kind of support. Which support apparatus — stake, tomato cage, peony ring or branch — is ideal for your dahlias is dependent upon the supplies you’ve got available along with the garden look you prefer. Dahlias are hardy in U.S. Department of Agriculture plant hardiness zones 8 through 10.
A plant stake is the conventional dahlia support and works well when its size is proportional to the size of this plant it facilitates. Locate a stake precisely the same height as the supreme height of a dahlia plant, and then add the stake into the ground 1 to 2 inches in the eye of the dahlia’s tuber before you cap which tuber so that you don’t accidentally rubbed it with the stake. Push the stake 1 foot into the dirt so it’s going to be about 1 foot shorter compared to adult dahlia and obscured with its own foliage. The stake can be rebar or a sturdy timber or wood type from a garden center. After the dahlia is 1 foot tall, tie its primary stem to the stake with a thick but unobtrusive tie, such as green baler twine. Put a brand new tie about each 1 1/2 feet up the stake and main stem as the plant grows.
The type of cage often used for a tomato plant (Solanum lycopersicum), hardy in USDA zones 8 through 12, also works for a dahlia, provided the cage is made more secure than normal. Cutting off the legs under the smallest ring of a 42-inch-tall tomato cage and bend over the hints of those removed legs to flip them into long hooks is the very first part of a process recommended in an article on the Colorado Dahlia Society website. After you upend the cage over the dahlia plant so the cage’s widest ring rests on the ground, secure that ring in place by forcing the extended hooks at an angle over the ring and into the ground. The dahlia should develop through the center of the cage’s rings and also be supported by them.
A ring-style support frequently designed for a peony (Paeonia spp.) Works best for a kind of dahlia that will not grow much taller than a peony. The support usually contains metallic, vertical legs with one, metal, horizontal ring or grid atop the legs, and it is created for a plant to develop through the ring or grid. Such supports are available at garden centres but may also be homemade by welding metal wreath wheels or frames onto metal stakes. Peonies are hardy in USDA zones 4 through 10, based on the species.
Should you prefer a more rustic, natural look, then push one or more dead tree branches into the ground for every single dahlia, and tie the dahlia’s most important stem into the branches. Recently cut boughs may try to root in the ground. Opt in place of dead branches which are dry but not yet fragile.