Supertunias in containers will need to be fed more regularly to be their absolute best. In general, containers need to be fed more than landscape plants. If you have a very long season, a second application of controlled release plant food should be considered for landscape plantings. Supertunias are heavy feeders, but a single dose is usually sufficient for landscape beds in most climates. This applies to both landscape and container plantings. They will perform best if an application of controlled release fertilizer is included at the time of planting. If your petunia plant is in a spot that you walk by regularly, make it a habit to check for dead blooms and remove them as you see them.These are heat tolerant plants, that aren't particularly fussy and need little routine maintenance. You don’t have to remove them all at one time. There is no hard and fast rule for when exactly to deadhead petunias, but generally you can remove the petunia bloom when it begins to look spent. If you think your petunia plants need more than just deadheading to freshen them up, read more about how and when to prune your petunias. You don’t need to cut off much of the petunia stems, but if they look ratty, you can cut the stems below the flower and above green, healthy-looking foliage. If you don’t remove the base of the flower, you’ll end up with a dried seed pod instead of a new bloom. Don’t just remove the petals-the base is where the seeds are. Remove the dead bloom, and make sure to get the base of the flower with it. WHERE DO YOU CUT WHEN DEADHEADING PETUNIAS? Simply use your thumb and forefinger to pinch off spent blooms or use pruning shears or scissors if you prefer. Otherwise, the energy will be directed towards helping the dead flowers produce seeds. When you deadhead petunia plants, you ensure that the plants direct their energy toward creating more blooms. DOES DEADHEADING PETUNIAS PRODUCE MORE FLOWERS? Pictured here is Supertunia Vista Bubblegum growing at the front of a landscape bed.Photo by: Proven Winners. Petunias in the Proven Winners Supertunias series are self-cleaning and don’t require deadheading to look great all summer long. If you do deadhead, your plant will keep producing blooms practically all summer long. The process of deadheading is time-consuming, but overall, your petunia plant will have a healthier appearance if you deadhead. While it’s not required, petunias are one of many plants that benefit from deadheading. Be sure to do your research before deadheading your plant. Important: Not all plants require deadheading, and some should not be deadheaded. Deadheading keeps plants blooming longer. If spent flowers are left on plants, the plant’s energy goes toward forming seeds rather than creating more flowers. The process of deadheading involves removing spent flowers so energy is directed to creating more blooms during the growing season. Read on to learn the answer to one of the most common questions about petunias: do they need to be deadheaded? WHY DEADHEAD A PLANT? Because they come in so many different colors, they can fit in with just about any gardening style. Petunias are a wildly popular annual for a variety of reasons: they are easy to care for, heat-tolerant, and vigorous.
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