When to prune a particular shrub can be a confusing practice for even the most experienced gardener. Luckily there are many plant guides to help remind us of pruning times or even a quick call to your local Extension office.
Now that we finally remember the best time to prune azaleas or French hydrangeas, the nursery throws us a loop with everblooming plants. Although not new, the Encore® series of azaleas and Endless Summer® collection of hydrangeas have the wonderful characteristic of blooming repeatedly throughout the growing season. When is the best time for pruning these repeat blooming shrubs?
In general, if you select your Encore® azalea carefully, it should need very little pruning. There are many sizes available to fit every space. Reduce your need for pruning by choosing a selection that will not outgrow your space. For example, Autumn Sangria® is a larger selection to at least 4-5 feet tall while Autumn Embers® is about 3 feet tall. If your plant needs a little selective pruning, the best time to prune is still after the first initial big bloom in April.
Encore Sangria has vivid pink flowers. Photo by Beth Bolles, UF IFAS Extension Escambia County.
Pruning time for Endless Summer is the same for other mophead hydrangeas even though it blooms on both old and new wood. You may selectively prune after the first bloom. It is always fine to deadhead faded blooms back to the first healthy buds.
Your UF IFAS Extension office in the Northwest District would like you to continue your break from mowing. We invite you to support the 2024 No Mow March campaign by pledging to let your wildflowers grow for pollinators. This can be throughout the yard or in one particular spot. During March our turfgrasses are still waking up and many of the flowering wildflowers that are growing offer food to active pollinators. We are seeing a wide variety of flowers including Toadflax, Common vetch, Lyre-leaved sage, White clover, Florida betony, and Blue violets to name a few. Take Our Pledge for pollinators.
Lyre-leaved sage, Florida betony, and White clover. Photo by Beth Bolles, UF IFAS Extension Escambia County.
If you are required to mow the lawn by a Homeowner’s Association, consider a different gardening activity to support pollinators. Container gardens are very attractive features in a landscape and you can select a wide variety of flowering perennials that pollinators enjoy. Many herbs like chamomile also grow well in containers and have flowers visited by native bees.
Your traditional landscape design with trees and shrubs can offer flowers for pollinators too. There are several native shrubs that bloom in March that would beautify any landscape. Consider native azaleas, Walter’s viburnum, Red buckeye, or Virginia sweetspire. If you need a low growing border perennial you might consider the native Woodland phlox or Blue eyed grass.
Native azaleas, Walter’s viburnum, and Red buckeye. Photos by Beth Bolles, UF IFAS Extension Escambia County.
Finally be aware that many native pollinators have nesting activity that is different from the more commonly known honeybee. During March, we see the small dirt piles with a center hole of the native mining bees. These are in lawns, mulch areas, and fields. These solitary bees make a small chamber to raise a few young bees that will emerge later in the year. They are not aggressive and activity is seen for a few weeks.
Whether you take a complete break from mowing or add some flowering plants to your March landscape, you can make a difference for pollinators. Learn more about the Now Mow March campaign by visiting https://go.ufl.edu/nomowmarch and even consider joining our INaturalist No Mow March site to upload your plant and pollinator sightings.
Our winter season is a good time to install many trees and shrubs. Here is a basic review of a few planting practices to make sure that your new plants get off to the good start.
Many shrubs can benefit from a little pruning. Choosing what to prune to maintain a plant’s natural look can sometimes be a challenge. Get a few tips on pruning shrubs with cane type growth from UF IFAS Extension Escambia County.
Chitosan is used as an edible coating material to extend the shelf life of perishable commodities. It is a natural polysaccharide derived from chitin, a main component found in the exoskeleton of crustacean such as crabs, shrimps and insects. Chitosan is nontoxic, biocompatible, biodegradable and has antimicrobial activity that works against a wide range of bacteria and fungi. The incorporation of chitosan into the packaging material or direct application on the food surface helps to inhibit the spoilage caused by microorganisms. Moreover, chitosan has good moisture barrier properties as moisture accelerates the deterioration of many food products, leading to microbial growth, enzymatic reactions, and other forms of spoilage. Chitosan-based coatings or films act as a protective barrier against moisture, helping to maintain the quality of the food and prolong its shelf life. Chitosan can be applied as an edible coating directly onto the surface of fruit, vegetables, and other perishable products. This coating provides a protective layer, retarding moisture loss, reducing microbial contamination, and maintaining product quality for a longer period. Previously, chitosan applications were noticed to be efficient in reducing postharvest decay in strawberries, avocado, papaya, mango, and blueberry.
Blackberry (Rubs spp) belongs to the family Rosaceae and is known as super food due to its high nutritional value containing vitamin C, antioxidants, and phenolic compounds. Blackberry is a deciduous crop that grows best in temperate climates. Several blackberry species are native to Florida, and varieties that performed well in North and North Central Florida include Osage, Chickasaw, Apache, Arapaho, Choctaw, Ouachita, and Kiowa. Recently significant planting of different blackberry varieties has been done in North Florida due to the favorable climatic conditions. However, highly perishable nature of the fruit poses substantial implications for fresh market and storage.
Cold storage is a widespread approach used to extend the shelf life of fruit, including blackberries. Cold storage helps to slow down various biochemical and physiological processes, involving respiration and microbial growth, which are responsible for the deterioration of fruit quality. Blackberry fruit is fragile and highly perishable and must be handled with care. Moreover, blackberry fruit is typically stored no more than 2-3 days at cold temperatures (1 to 2◦C). In addition, blackberries are also susceptible to water loss, fruit softening, fungal rot, mechanical injuries, leakage, and red drupelet reversion.
Fig 2: Effect of chitosan on the shelf life of blackberry fruit (Osage) stored at 1◦C for 7 and 21 days.
Credit: Muneer Rehman, UF/IFAS
Chitosan emulsion as pre-harvest spray application significantly reduced fruit weight loss (%) in blackberry fruit stored at 1◦C for 7, 14 and 21 days. Fruit weight loss during cold storage is a critical factor in deciding the blackberry quality. Furthermore, weight loss (%) has correlation with fruit firmness, leakage, red drupelet reversion and marketing index.
Fig 3: Pre-harvest spray application of chitosan emulsion reduced fruit weight loss (%) during the fruit stored at 1◦C for 7, 14 and 21-days Credit: Muneer Rehman, UF/IFAS
Blackberries stored in cold storage showed signs of mycelium growth if conditions were favorable for fungal development. The most common contaminants during the postharvest handling and storage of blackberry fruit are fungi and molds. Direct application of chitosan on the fruit surface reduced the mycelium growth.
(B)
Fig 4: Chitosan treated fruit (A, top photo) with no or little sign of mold, while (B, bottom photo) is control.
Credit: Muneer Rehman, UF/IFAS
Research trials on the effect of different concentrations of chitosan emulsion alone and in combination with growth bio-stimulants as pre-harvest and postharvest are ongoing at Fruit Physiology Lab, North Florida Research and Education Center, Quincy.
