With the arrival of spring weather in the Panhandle, many people have begun planning a vegetable garden. However, many gardeners that I talk to tell me more of their gardening frustrations than successes. I surmise the main reason for their frustration is simply doing what gardeners have done across centuries and all over the world, planting in the ground. That’s a great strategy in many places; unfortunately, in the Panhandle, we are not often blessed with great soil. We can overcome our poor soil conditions and be more successful by going above ground with raised beds!
Gardening in raised beds has three primary benefits for area gardeners: the ability to control soil conditions, reduce disease problems, and be space efficient. The first raised bed benefit is the most critical. Soil in and around much of the Panhandle is sandy in nature with little rich organic matter. To make matters worse, much of our native soil is either too well-drained and dries out rapidly or is the opposite and frequently stands in water – neither is conducive to garden success. We can alleviate all the above issues by creating our own perfectly draining, nutrient-rich soil environment inside a raised bed. One can either make their own soil concoction by experimenting with different ratios of compost, aged pine bark, peat moss, perlite, etc. or simply purchase bagged garden soil. I use either 100% mushroom compost or a 1:1 mix of mushroom compost & aged pine bark, but many soil component combinations work well.
Cabbage grown in a 4’x8′ raised bed. The soil media is mostly mushroom compost. Photo courtesy of Daniel Leonard.
Gardening in raised beds can also dramatically reduce the incidence of disease. Many of the most serious vegetable garden diseases like Bacterial Wilt and Late Blight in tomato are soilborne, surviving for years in the ground and only needing a splash of rainwater to transfer them onto your vegetable plants. Growing in beds with curated soil mostly alleviates this issue. Our sandy soils also tend to have damaging levels of difficult to control nematodes (microscopic round worms that feed on plant roots). Because nematodes prefer porous sandy ground, switching to raised beds with rich organic soils also removes that concern.
Finally, growing in raised bed gardens allows for a very efficient use of space. A typical raised bed is 4’x8’ in diameter, meaning you can site one nearly anywhere, regardless of how big or small your yard is. You don’t even need a yard space in some cases! If you have only a sunny porch or driveway, you can certainly mimic raised bed conditions with large containers. Most people are surprised by the amount of produce that you can pack into one or several 32 square foot raised garden beds, especially when you pay attention to plant mature size and group accordingly. The square foot gardening method is a great way to maximize raised bed produce yield.
If you have struggled in past years to produce a fruitful, high-yielding, mostly disease-free garden, your problem might be below your feet in the soil. As you plan your vegetable gardening activities this year, try gardening in raised beds and get ready for your best gardening season yet! For more information about vegetable gardening, raised bed construction, or any other horticultural topic, contact your local UF/IFAS County Extension office. Happy Gardening!
Want to grow a vegetable garden but don’t know where to start?
Raised bed gardens give you the ability to put a garden anywhere you have at least six hours of sunlight and access to water, regardless of your native soil type.
See the fact sheet below (Or Click Here for the downloadable PDF version!) for tips on how to build a raised bed vegetable garden. And be sure to reach out to your local Extension office with any questions!
Page 1 of the Building Raised Bed Gardens Fact Sheet created by UF/IFAS Leon County Extension.Page 2 of the Building Raised Bed Gardens Fact Sheet created by UF/IFAS Leon County Extension.
Cilantro is an herb that grows well in the cooler months of North Florida gardening. Beth Bolles will share how to grow and use cilantro in the latest Garden to Table feature from UF IFAS Extension Escambia County.
Raised beds are an excellent way to get started with gardening. Photo by Molly Jameson.
One of the biggest obstacles a vegetable gardener faces is how to supply crops with healthy soil that can support crop growth all season long. Many native soils in Florida are stripped of imperative nutrients that crops need to grow, are too compacted from vehicle and foot traffic, and are often too sandy to support soil life, which is very important for nutrient cycling, building soil structure, and combating pests and diseases.
One of the best ways a gardener can ensure a successful gardening experience is to build a raised bed garden. No matter your native soil type and existing conditions, raised bed gardens allow a framework for building nutrient rich soil that can supply crops with what they require to grow healthily and thrive.
Want to learn how to garden using raised beds? On February 5, from 6:00 to 7:30 p.m., UF/IFAS Extension Leon County is offering a Raised Bed Gardening 101 workshop as part of the Red Hills Small Farm Alliance’s Seven Days of Local Delights. This is a week-long annual celebration that includes educational workshops, restaurant partnerships, fundraisers, and more that supports the local food community and farmers in the Red Hills Region. This year, the Seven Days of Local Delights runs from Sunday, February 3 to Sunday, February 10.
A trellis can even be built right on the end of a raised bed. Photo by Molly Jameson.
At the Raised Bed Gardening 101 workshop, learn how to choose the best raised bed garden site location, basics of irrigation in raised beds, planting dates and plant spacing, the difference between treated and untreated lumber, how much and what type of soil to use, and other tips on growing food in your backyard.
Check out everything going on during the Seven Days of Local Delights at the Red Hills Small Farm Alliance website: https://www.redhillsfarmalliance.com/seven-days. If you are not in the Tallahassee area, check with your local extension office to see what gardening events they may have available and how you can support your local food community and farmers in your area.
I had to do a hard thing last week. My battle-worn okra, eggplant and pepper plants that had produced so reliably since June and endured all the summertime challenges (heat, insects, disease, and a hurricane to name a few) were finally pulled out of my raised bed garden and discarded. A combination of lowered yields, increased insect pressure, and the fact that one can only eat so much okra in a calendar year sealed their fate.
However, before planting our cool-season veggie favorites, like those tender leafy greens and wonderfully crunchy carrots, there are a few things to do to get our raised beds in shape to give maximum yield performance and make growing a little easier.
Replenish the Soil
One of the main benefits of raised beds is the ability to grow in near-perfect soil conditions. If I was relegated to gardening in my yard’s less than ideal native sandy soil, I might have given up altogether by now and I suspect many of you would be in the same boat. Raised beds totally alleviate this problem and give gardeners the opportunity to grow in rich, fertile soil composed of your favorite homemade soil mixture (mine is two parts mushroom compost to one part aged pine bark) or commercial potting mix/compost. However, at the end of each growing season, you will notice you have a bit less soil in your beds than you did at the beginning. While frustrating, this is a natural process for soils rich in organic material – they naturally break down and decompose! So to give your veggies’ roots the maximum amount of growing space for the coming season, top off your beds with a quality soil/compost mix and till it in before sowing seed or setting out transplants.
Eliminate Competing Roots
If you have a mature tree anywhere near your raised bed garden, you are going to be in for a surprise when you till that new compost in! It turns out that tree roots like that rich, fertile raised bed soil just as much as vegetables do and will seek it out. It is not uncommon for mature trees to have root systems that stretch horizontally two to three times the height of the tree, meaning a 50’ oak tree could have roots growing well over a hundred feet away from its trunk! Therefore, unless you have a totally tree-free property, battling tree roots in your beds will be an ongoing issue. For instance, each fall, when I transition from warm season to cool season crops, I find that my neighbor’s Laurel Oak has filled all three of my raised beds full of feeder roots glad to be free of the infertile sand. This is a problem because those roots suck up vital water and nutrients meant for my vegetable crops, robbing them of reaching their full potential. It is good practice to thoroughly till your beds’ soil and remove as many of the competing roots as you can. Doing so will give your new plants a head start on becoming established before the competition returns.
Depleted soil and competition from tree roots are two of the biggest threats to your raised bed’s performance. By planning ahead and accounting for both of these things prior to planting your fall garden, you will be more likely to reap a larger yields when harvest time comes! For more information on raised bed vegetable gardening and other horticultural questions, contact your local UF/IFAS Extension Office. Happy fall gardening!
