How to keep hydrangeas upright. Another way to help prevent your hydrangeas from flopping over is to prune them sparingly. Once your hydrangea stems are cut dip each individual stem in the alum powder. Place a bit of alum powder on a plate about 12 in 13 cm deep.
Overhead watering can weigh down the flowers causing them to flop over. This is more likely to cause them to bend over or droop. This will help the blooms thrive for a longer period of time.
How to keep hydrangeas from flopping over. Then place the stem in a vase with water and arrange the flowers. Misconceptions hydrangea plants often flop over because pruning allows larger flowers to grow.
Most hydrangeas require very little if any pruning and if you prune them too often or too early the stems will be very thin and they wont be able to support the weight of the flowers nor will the branches be able to support all of the stems. Water hydrangeas at the bottom of the shrub rather than from overhead. If this still isnt enough staking with peony supports or tying the central supports of your hydrangea to a sturdy metal stake or fence post may help it appear more upright.
Staking helps keep the plants tidy the branches from bending under the weight of the flowers and keeps the flowers in full display in your garden. Hydrangeas that produce large flowerheads like the annabelle hydrangea appreciate some added support to keep their flower stems upright enfield explains. Removing the faded blooms reduces.
If its a yearly problem try thinning the inside of your plant to promote more robust growth as well as removing about half the flower buds early in the season. Hydrangeas hydrangea spp come in many varieties and colors.