Not All Palm Fertilizers are the Same

Palms are often lacking nutrients in our sandy soil but realize that not all palm fertilizers are good for your plant. Look for a fertilizer where all the nutrients are in a slow release form. The fertilizer analysis will be 8-2-12-4 (Nitrogen – Phosphorus – Potassium – Magnesium). Also read further on the label for Polymer Coasted Sulfate of Potash, Magnesium Sulfate (Kieserite), and Chelate (Iron EDTA). These are the forms of nutrients that will be beneficial to your palms. Apply 1.5 lbs of this fertilizer per 100 square feet of area.

Potassium deficiency begins in older leaves that yellow and then have brown margins. Pruning these off will make the deficiency worse.

Learn more about palm fertilizing In the Garden

Permanent link to this article: http://escambia.ifas.ufl.edu/lng/2017/05/31/not-all-palm-fertilizers-are-the-same/

Garden Drama with Amazon Dianthus

We may shy away from drama in our lives but drama in the garden is always welcome. One plant series that will be a prominent feature in any garden bed is the Amazon Dianthus series.

Amazon Dianthus series is showy in the garden or in a container. Photo by Beth Bolles, UF IFAS Extension Escambia County

Although we normally consider Fall the time to plant dianthus, the Amazon Series developed by PanAmerican Seed company can be planted in Spring for blooms that extend into Summer. This is the combination of two dianthus and the results are plants with striking colors and longer blooming cycles.

The Amazon series comes in a few bright colors including Amazon Neon Cherry, Amazon Neon Pink, and Amazon Rose Magic. Flowers are held on stems about 1.5-2′ tall and foliage is an attractive dark green. Plants are generally low maintenance but be sure to deadhead flowers as they fade. Plants will need rich, well drained soil and full sun.

Neon Cherry. Photo by Beth Bolles, UF IFAS Extension Escambia County

Neon Pink. Photo by Beth Bolles, UF IFAS Extension Escambia County

 

 

 

 

 

 

 

 

 

 

If you don’t have room for the Amazon dianthus series in your landscape, plants will also grow well in containers to brighten a patio or deck.

Permanent link to this article: http://escambia.ifas.ufl.edu/lng/2017/05/02/garden-drama-with-amazon-dianthus/

Native Shrub Option for our Sandy Soil

We often talk about sandy, nutrient poor soil in Florida and how difficult it is for growing many favorite landscape plants. Gardeners may spend considerable time and money amending soils with organic matter to improve the quality for growing plants.

The low maintenance approach is to embrace your sandy soil and consider plants that thrive in sandy, well drained soil. One very attractive native shrub that actually prefers this type of soil is False rosemary, Conrandina canescens.

False rosemary is a member of the mint family that is well adapted to drier, sandy soils. It can be found in many coastal communities growing in natural areas.  It is easily recognized in the spring and early summer by light purple blooms.  Considered a small shrub or groundcover, False rosemary needs full sun.  One plant can easily spread out to 4-5 feet with a height of 2-3 feet.

False rosemary is an attractive native plant for Gulf Coast landscapes. Photo by Beth Bolles, UF Escambia County Extension

False rosemary does have aromatic foliage and is attractive to bees. It is a very low maintenance plant once established and the few plant issues tend to be related to soils with too much moisture and plants being shaded after establishment.  New seedlings will emerge around the main plant when growing conditions are right.  If you want to try this native plant in your landscape, talk to your local nursery.

False rosemary flowers are attractive to pollinators. Photo by Beth Bolles, UF Escambia County Extension

Permanent link to this article: http://escambia.ifas.ufl.edu/lng/2017/03/27/native-shrub-option-for-our-sandy-soil/

Lack of Winter Chill a Problem for Fruit

Many of us are enjoying our warmer temperatures this winter, but many deciduous fruit crops really need cold temperatures in order to break dormancy for the year.  In areas that experience cold temperatures plants have evolved the ability to survive by slowing growth and protecting sensitive tissues by going dormant.  In order to break out of dormancy and begin growth again, plants experience an amount of chill hours (temps between 32 and 45 degrees F) that is suitable for specific areas.  In our area, we normally range between 400 and 600 chills hours.

Arapaho blackberry has chill requirements that match those received in our area.

If we choose a fruit plant whose chill requirements match the amount of chill in our area, the plant will generally resume growth when it is safe for buds and tender tissues to develop.  If we choose a plant with chill requirements higher than the amount our area receives, then the plant is not signaled to break dormancy and we end up with very sparse growth and no fruit.

So far in the winter of 2016-17, Escambia County has not received ‘normal’ amounts of chilling temperatures.  Common fruit like apple, peach, some blueberries, and certain selections of blackberries may be affected by this by not breaking out of dormancy.  This can impact your flower and fruit formation.  For commercial growers, it can impact the amount of fruit available and even fruit prices at markets.

Since fruit trees are an investment of time and money, these are not plants that can be easily replanted to match chill hours with changing weather patterns.  Your future decisions to grow fruit trees may include crops that don’t rely as much on chill hours to be successful.

 

Permanent link to this article: http://escambia.ifas.ufl.edu/lng/2017/02/08/lack-of-winter-chill-a-problem-for-fruit/

An Important Tip When Installing Sod

It won’t be long before homeowners start thinking about sodding a new lawn or renovating areas of their existing turf. Although sodding when turf is dormant is acceptable, it is best to install sod that is green. One reason is that you can see if any sod pieces are infested with weeds such as bermudagrass . This perennial grass is very difficult to manage once it becomes established in centipede, St. Augustine, or zoysiagrass. Always remove turf pieces with bemuda during the installation process to prevent it from taking over a patch of your new lawn.

Bermudagrass growing in a piece of centipede sod. This piece should have been removed during installation to prevent the bermudagrass from taking over a patch of new centipede lawn.

Permanent link to this article: http://escambia.ifas.ufl.edu/lng/2017/01/04/an-important-tip-when-installing-sod/

Don’t Be Afraid to Disturb the Rootball

A new tree or shrub is an investment for the future. When we pick an ornamental plant, we have the hope that it will survive for many years and offer seasons of beauty that enhance our landscape.  Time is often spent picking a suitable spot, preparing the planting hole, and watering until establishment.  We give it the best of care to make certain that our new plant becomes a more or less permanent feature.

With all of our tender love and care for new ornamentals, there is one important practice that we may neglect. Most homeowners purchase plants in containers and it is common to find rootballs with circling roots.  If any root ball problems are not addressed before installation, the life of your plant may be shorter than you want.

Ten years after installtion, this plant was ultimately killed by girdling, circling roots.

Ten years after installation, this plant was ultimately killed by girdling, circling roots. Photo by Warren Tate, Escambia County Master Gardeners.

The best practice for woody ornamentals is to cut any roots that are circling the trunk or container. Homeowners may slice downward through the rootball around the entire plant. For shrubs, it is recommended to shave off “the entire outside periphery of the rootball” to eliminate circling roots. These practices allow the root system to grow outward into new soil and greatly reduce the possibility of girdling roots killing your plants years after establishment.

Circling roots are cut before installation. Photo by Beth Bolles, Escambia County Extension

For more information on shrub establishment, visit the UF Publication Planting Shrubs in the Florida Landscape.

Permanent link to this article: http://escambia.ifas.ufl.edu/lng/2016/12/19/dont-be-afraid-to-disturb-the-rootball/

Look More Deeply for Causes of Plant Wilt

Plants have specific ways of telling gardeners that there is a problem but not all plant symptoms lead us directly to the cause. During drier conditions, we often use wilting leaves as an indicator that water is needed.  This can be a reliable symptom that the soil is lacking moisture but it is not always the case.  Wilting leaves and herbaceous branches actually tell us that there is not adequate water in the plant.  It does not necessarily indicate lack of moisture in the soil.

Leaf wilt may not always indicate dry soil.

Leaf wilt may not always indicate dry soil.

There can be many reasons why water is not being absorbed by roots and moved to tissues in the plant. The obvious place to start is by checking soil moisture.  If soil is powdery several inches deep around the plant, water is likely needed. However, if you ball the soil up in your hand and it holds together, there may be another reason for lack of water reaching the upper plant parts.  The harder part is determining why the root system is not taking up water.  Causes can be a rotted root system from too much water, a poorly developed root ball that has circling or kinked roots, and even problems in the soil such as compaction.  Insects, diseases, and other pathogens can also injure root systems preventing the uptake of water.

So before automatically grabbing the hose or turning on the sprinkler, do a little soil investigation to make sure that the plant wilt is really indicating lack of water in the soil. If you need help in your diagnosis, always contact your local Extension office.

Permanent link to this article: http://escambia.ifas.ufl.edu/lng/2016/11/16/look-more-deeply-for-causes-of-plant-wilt/

Spiny Orb Weaver Spider

The year’s mild winter and frequent rain showers have created lush lawns and gardens with an abundance of insects. As a result, we are seeing many predator arthropods taking advantage of the available feast.  One of the morning interesting creatures in the garden is the spiny orb weaver spider (Gasteracantha cancriformis) that has an interesting body shape.

Spiny orb weavers are common spiders in landscapes that might not be noticed since they are much smaller than the Yellow garden spider (Argiope aurantia) and the Golden silk spider (Nephila clavipes). Once viewed, the spiny orb weaver will catch your attention because it’s abdomen has six ‘spines’ or points that extend out.  Spiders also have a mix of yellow, white, red, or black marking on the abdomen.

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Spiny orb weaver in the center of the web waiting for a meal. Photo by Beth Bolles

Although spiders are small, the webs which are common amongst shrubs, trees, and edges of woods become quite substantial in the fall. There may be up to 30 spirals that extend out with the spider situated in the center.  You may unexpectedly encounter a web when walking through the garden or mowing around trees and shrubs.  There is no worry if a spider accidently gets on you as bites are not common and not considered serious.

Spider working on her web. Photo by Beth Bolles

Spider working on her web. Photo by Beth Bolles

Some may refer to the spiny orb weaver as a crab spider based on its shape, but it is a web building where the true crab spiders are active hunters often found resting on flowers in order to ambush a meal.

Enjoy our fall weather and look out for this beneficial spider in your landscape.

Permanent link to this article: http://escambia.ifas.ufl.edu/lng/2016/10/03/spiny-orb-weaver-spider/

Best Seasons for Planting Coming Up

By the look of the crowded nurseries during March and April, the springtime seems to be the best time for planting. For our frost tender annuals and perennials this is the case but we are actually heading into our best seasons for planting trees and shrubs.

The fact that above ground portions of trees and shrubs go through a time of slowed growth or dormancy is the good reason for planting during the Fall and Winter. Although we don’t see it, roots are still growing slowly and the upcoming months give new plants the time for roots to spread into surrounding soil before hot temperatures return.  Water stress is also not as significant during the cooler months.  Plants still need to be supplied regular water but needs are not as high especially if rainfall occurs.

A tree installed in the cooler months has more time to establish before hot weather returns.

A tree installed in the cooler months has more time to establish before hot weather returns.

Start gathering your ideas for new or replacement trees and shrubs that will match your landscape and visit a local nursery this Fall.

If you need an update on tree and shrubs planting and care techniques read more in the UF IFAS publication.

Permanent link to this article: http://escambia.ifas.ufl.edu/lng/2016/09/07/best-seasons-for-planting-coming-up/

Consider Landscape Fabric Carefully

Homeowners and horticulture professionals spend time to develop an attractive ornamental bed only to have weeds take over months or a few years later. One common method in the attempt to prevent weeds is to apply a landscape fabric around plants in beds and place a layer of mulch on top to dress it up.  The thought is that this barrier on top of the soil will prevent a large number of weeds from emerging. The fabric physically prevents the growth of weeds from the soil below and blocks sunlight from reaching weed seeds.  Available fabrics are labeled as porous to allow air and water to move through them and reach ornamental plant roots.

On paper, landscape fabric sounds like a good idea and it may work for a little while. Over time, soil particles and decomposing mulch fill up the porous spaces in the fabric which prevent air and water from reaching plant roots. Even with irrigation or routine rainfall, plant roots often do not receive the needed water and air for healthy growth.  Plants may respond by trying to send roots through fabric seams which breaks down the intended weed barrier.  Other plants slowly decline or may die quickly due to water stress or lack of sufficient air movement into the soil.

Fabric may initially prevent some weeds but it can also prevent air and water movement. Photo by Beth Bolles, UF Extension Escambia County

Fabric may initially prevent some weeds but it can also prevent air and water movement. Photo by Beth Bolles, UF Extension Escambia County

 

Weed seeds also find their way into the mulch that is on top of the fabric from nearby lawns and landscapes. The next thing you know, you have an entire weed crop growing in the mulch on top of your landscape fabric.  Perennial weeds such as torpedograss and purple nutsedge eventually grow through fabrics.

Seeds from annuals like Chamberbitter easily get into mulch from surrounding areas and grow on top of fabrics. Photo by Beth Bolles, UF Extension Escambia County

Seeds from annuals like Chamberbitter easily get into mulch from surrounding areas and grow on top of fabrics. Photo by Beth Bolles, UF Extension Escambia County

The best place to consider fabric if you want to install it in the landscape is under mulched paths or other areas without ornamental plantings where a synthetic groundcover is needed. In order to have a healthy root environment for your ornamental bed plants, it is best to keep landscape fabric out of these areas.

Permanent link to this article: http://escambia.ifas.ufl.edu/lng/2016/08/17/consider-landscape-fabric-carefully/

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