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Raised Bed Gardening 101

Raised Bed Gardening 101

Raised-bed gardening can maximize production in a small amount of space. Photo by Molly Jameson.

Want to start a vegetable garden, but don’t know where to start? Are you seeing rectangular boxes popping up all over your neighbors’ yards and wondering why? Well, I am here to spread the news of raised-bed gardening!

Raised-bed gardening is a convenient way to grow vegetables without worrying about the quality of your soil. This is because you will be bringing in a high quality soil mix to your site. Vegetable plants need nitrogen, phosphorus, potassium, and many other nutrients to grow and mature properly. In many Florida Panhandle soils, we either have too much sand, too much clay, and nearly always, not enough organic matter. Organic matter results from the various stages of decay of anything that was alive. Think of it as the “glue” that holds the soil together, improves both soil moisture-holding capacity and drainage, and slowly releases nutrients that become available to the plant.

Organic matter is the “glue” that will hold your soil together. Photo by John Edwards.

Although you could add nutrients and organic materials to your soil without building a raised bed, the walls of a raised bed will hold your soil in place, reduce erosion, and even help keep out weeds. Here are a few things to consider when planning the installation of a raised-bed garden:

Location

The most important thing to consider when picking your location is sunlight. Vegetable plants need a lot of direct sunlight for optimum production. Leafy vegetables (lettuce, kale, arugula) can tolerate four to five hours, but fruiting crops (tomatoes, squash, peppers) generally need six hours of full sunlight to grow strong and produce fruit.

When starting a garden, remember that we are in the northern hemisphere, and this means the sun dips to the south, especially in the winter. Objects therefore cast a shadow to the north, so pay attention to the position of southern tree lines, houses, and anything else that may block the sun. If you must choose, morning sun is better than afternoon sun, as afternoon sun can be very extreme in our area, especially in the summer.

Lastly, consider visibility! If you stick your garden in the very back corner of your yard, how often will you see it? The more visible it is in your daily life, the more likely you will notice easy-to-pull weeds, when your garden needs watering, what is ready to be harvested, and everything else that goes on in the garden.

Although wood is most popular, you can use materials such as concrete, bricks, or tiles to build a raised bed. Photo by Molly Jameson.

Materials

Now you have chosen a perfect garden location. What materials should you use to build your raised bed? Lumber is the most popular material. But you could use concrete blocks, bricks, tiles, or anything else that can support soil. You can make your beds as long as you like, but the important thing to remember is not to make the raised bed wider than four feet. This will allow you to reach all areas of your soil without stepping into the bed, which causes compaction. If you are working with kids, two or three feet wide is even better. You should make the height of your bed 10 to 12 inches, which will allow good drainage and enough space for your vegetable plants to develop strong roots.

When choosing lumber, you can go with untreated or treated wood. Within the last 15 years, wood preservatives considered unsuitable for raised-bed gardening have been phased out. There is well-documented research that has shown the newer products are considered safe for gardening. Although untreated wood typically will not last as long as treated, even treated wood will still begin to decompose after a few seasons. Either way, connect your wood with lag bolts, instead of nails, to hold the wood together tightly.

When filling a four ft. by eight ft. raised bed, you will need about 1 cubic yard of soil mix. Photo by Molly Jameson.

Soil

Now that you have your raised-bed structure built, what will you put in it? There are many landscape and nursery companies that can offer vegetable garden soil mixes for purchase in bulk. Typically, they will be about 50 percent compost (organic matter) and 50 percent top soil (nutrient-containing minerals). If you are filling a four foot by eight foot by 12 inch raised bed, you will need about one cubic yard of soil mix, which typically costs $30 to $60. This is about the volume of the back of a pick-up truck. If you do not have access to a truck, most companies will deliver in bulk for a $30 to $50 fee. This could be worth it if you are filling up multiple beds! Seasonally, you will then need to top off your raised bed as your soil will shrink as the organic materials decompose. But for this, you can buy bagged soil mixes or make your own compost.

The last step is filling your raised bed with vegetable plants! This could also be considered the first step… as you now must consider plant spacing, spring vs. fall vegetables, seeding into the garden vs. using transplants, trellising, pest control, harvesting…but we’ll save all that for future articles. Happy gardening!

Why A One Size Fits All Approach to Lawn Care is a Bad Idea

Regardless of what the tag says one size does not fit all. As with clothing, a piece will undoubtedly be too large for some and too small for others. Trying to go with a “one size fits all” approach to lawn care will lead to the same kind of frustration and disappointment as an ill-fitting garment.

All turfgrass is not created equal. Thus management of our various turf species requires different methods. It is common for a homeowner to be unaware of what type of turfgrass they have – it’s all grass after all – what difference does it make? Misidentification leads to problems because proper management for one type may be counterproductive to another type. In order to create a practical turf management plan, it is critical that the species of grass is properly identified.

Although many grasses look similar it is important to know exactly what kind you have to maintain it properly. This photo shows Empire Zoysia. Photo credit: Julie McConnell, UF/IFAS

Why is it important to know the species of turf in a lawn?

Two of the most common mistakes extension agents observe is excessively low mowing height of St. Augustinegrass  and over-fertilizing Centipedegrass. Both of these errors can reduce turfgrass vigor and decrease its tolerance to pest issues. Another potential maintenance pitfall is using a herbicide that is not labeled for use on a given type of turfgrass. Several popular herbicides available on the market can cause damage to St. Augustinegrass and/or Centipedegrass.  Thus turf can be inadvertently killed by herbicides when they are applied to the wrong species.

Before a lawn maintenance plan is developed, be sure to know what type of grass is present and then follow UF/IFAS recommendations for proper care. If assistance is needed with identification, contact your local extension office.

To learn more about lawn care, visit this site or plan to attend “Caring for Your Florida Lawn” at the UF/IFAS Extension Bay County office on April 8th. For more details call 850-784-6105.

Dooryard Citrus Care for February

Dooryard Citrus Care for February

Dooryard citrus enthusiasts may be uncertain about late winter management of Satsuma and other citrus trees.  Several questions that have come in to the Extension Office recently include:

  • Should I prune my trees?
  • Why are the leaves yellow?
  • How soon should I fertilize? 

The focus of this article is to provide some answers to these common questions.

Should I prune my trees?

This is a complicated question that is best answered with “it depends…”  Pruning is not necessary for citrus, as it is in many temperate fruits, to have excellent production quality and quantity. Citrus trees perform excellently with minimal pruning. The only pruning necessary for most citrus is removing crossing or rubbing branches while shaping young trees, removing dead wood, and pruning out suckers from the root-stock. Homeowners may choose to prune citrus trees to keep them small, but this will reduce potential yield, since bigger trees produce more fruit.

Often, maturing Satsuma trees produce long vertical branches. It is tempting to prune these off, since they make the tree look unbalanced. To maximize yield, allow these branches to weep with the heavy load of fruit until they touch the ground. This allows increased surface area for the tree, since the low areas around the trunk are not bare. Additionally, weeds are suppressed since the low branches shade out weed growth. The ground under the trees remains bare, thus allowing heat from the soil to radiate up during cold weather events. The extra branches around the trunk offer added protection to the bud union as well. If smaller trees are desired for ease of harvest, ‘flying dragon’ root-stock offers dwarfing benefits, so that the mature scion cultivar size will only grow to 8-10 feet tall.

Heavy fruit loads were produced in many home gardens throughout Northwest Florida last year. When fruiting is heavy, citrus trees translocate nitrogen and other nutrients from older leaves to newer growth and fruit. Therefore, temporary yellowing may occur and last until trees resume growing in the spring. Remember, never fertilize after early September, since fertilizing this late in the year  can reduce fruit quality and increase potential for cold injury. If a deficiency, as in the photo above persists through spring, consider a soil test, or consult a citrus production publication to determine if additional fertilizer should be added to your fertilizer program.

How soon should you fertilize?

Although most Florida citrus publications recommend fertilizing citrus in February, they don’t take into account the potential for late frost in the Panhandle. Thus it makes more sense to wait until mid-March for the first fertilizer application in this region. Citrus trees don’t require a fertilizer with a high percentage of nitrogen, so it is best for fruit quality if an analysis of around 8-8-8 with micro-nutrients is used. Fertilizer should be applied in the drip-line of the tree, not around the trunk. The drip-line of a mature tree is generally considered to extend one foot from the trunk out to one foot from the edge of the furthest branch tip from the trunk. For fertilizer quantity recommendation see the chart below.

Table edited by Doug Mayo, from “Citrus Culture in the Home Landscape”

Through awareness of the unique managements techniques inherent to  dooryard citrus production in the Panhandle, home gardeners are offered an opportunity to provide their friends and family with a substantial portion of their annual citrus !

 

For more information on this topic please use the following link to the UF/IFAS Publication:

Citrus Culture in the Home Landscape

 

Enabling Technique for Raised Bed Gardens

Enabling Technique for Raised Bed Gardens

Now is the time to start planning for a spring garden! There are many different methods of successful gardening but here I’d like to discuss raised bed gardening.

A few advantages of raised beds:

  • Raised bed gardens provide an opportunity to bring the family together for some quality time. Add ways that you can enjoy the time with your spouse, child or grandchild. This gives you a chance to see the wonder on their faces as the plants sprout and flourish.
  • Share the joy as you smell the flowers and pick the fruit.
  • Provide a bouquet for the table as you add an item from the garden to your family meal.

A special kind of raised bed garden, known as an enabling garden, provides individuals needing assistance a way to garden with ease. Many have the impression that building such a garden is expensive, but it is not much more expensive or difficult than building a raised bed garden on the ground. First, begin by trimming and framing a raised bed garden just as you would for a ground level raised bed.

Materials

  • 2 – (2X8) boards 14 foot long (treated or cedar)
  • 2 – 2 ½ foot end pieces trimmed from a 2×8 board (treated or cedar)
  • Central brace board trimmed to fit the inside of the bed
  • 16 – 3 inch screws
  • Table Saw
  • Drill
  • Extension Cord
  • Durable base such as metal screening, lined with permeable weed barrier, attached to the frame securely.

Once it is made, raise it to the desired level by placing it on cinder blocks. Add enough soil or compost to mound slightly higher than the lumber. Make sure the compost is well rotted, or use sterile potting soil. Don’t use soil from the garden since it may contain root diseases. Smooth out media evenly. Purchase a drip hose or line and run back and forth over the center area. Young plants will not have a large root so make sure the irrigation delivers adequate water to the entire bed.

Many different vegetables herbs can be grown in raised beds but peppers, squash, eggplant, cherry tomatoes, basil, thyme, oregano and mint make excellent choices for a spring raised bed. Happy Gardening !

 

 

 

 

 

Arbor Day: An American-born Celebration

Arbor Day: An American-born Celebration

Arbor Day has a 145-year history, started in Nebraska by a nature-loving newspaper editor named J. Sterling Morton who recognized the many valuable services trees provide. The first Arbor Day was such a big success that Mr. Morton’s idea quickly spread nationwide–particularly with children planting trees on school grounds and caring for them throughout the year. Now, Arbor Day is celebrated around the world in more than 30 countries, including every continent but Antarctica. We humans often form emotional attachments to trees, planting them at the beginning of a marriage, birth of a child, or death of a loved one. Trees have tremendous symbolic value within cultures and religions worldwide, so it only makes sense that people around the world have embraced the idea of celebrating a holiday focused solely on trees.

Ancient trees like this live oak have an important place in our cultural history. Photo credit: Carrie Stevenson

In addition to their aesthetic beauty and valuable shade in the hot summers, trees provide countless benefits: wood and paper products, nut and fruit production, wildlife habitat, stormwater uptake, soil stabilization, carbon dioxide intake, and oxygen production.  New research is even showing that trees can communicate throughout a forest, sharing “information” and nutrients through a deeply connected network of roots and fungi that can increase the resiliency of an entire forest population. And if you’re curious of the actual dollar value of a single tree, the handy online calculator at TreeBenefits.com can give you an approximate lifetime value of a one growing in your own backyard.

While national Arbor Day is held the last Friday in April, Arbor Day in Florida is always the third Friday of January. Due to our geographical location further south than most of the country, our primary planting season is during our relatively mild winters. Trees have the opportunity during cooler months to establish roots without the high demands of the warm growing season in spring and summer.

To commemorate Arbor Day, many local communities will host tree giveaways, plantings, and public ceremonies. In the western Panhandle, the Florida Forest Service, UF/IFAS Extension, and local municipalities have partnered for several events, listed here. As the Chinese proverb goes, “The best time to plant a tree was twenty years ago. The second best time is now.”

For more information on local Arbor Day events and tree giveaways in your area, contact your local Extension Office or County Forester!