1. Picking the Wrong Spot
Your raised bed location should receive at least six hours of direct sun each day. If you’re siting your location in early spring, be sure to consider what surrounding trees will look like come summer and where their shade will fall. Pick somewhere relatively flat, but avoid low-lying areas such as the bottom of a hill where rainwater collects. Putting raised beds up against a fence or wall means you won’t be able to access all four sides easily.
2. Forgetting About a Water Source
The back of your yard may be a logical place to put your raised bed, but not if you have to lug buckets of water all the way. Make sure it’s close enough to an outdoor faucet that a garden hose can reach. You may also want to consider installing a drip irrigation system to keep your bed consistently watered with minimal waste.
3. Making the Beds Too Big
While it’s tempting to create a large plot, it’s important to keep logistics in mind. Your plot should be narrow enough that you can reach at least halfway across it to plant, weed, water, and harvest in the middle. Three to five feet wide, which is the size of most premade kits, is ideal for most people. Avoid making it too long as well; you don’t want to become frustrated walking in giant circles around your plot. If you have the space and desire, you may be better off creating multiple smaller raised beds.
4. Building with the Wrong Materials
If you are planning on building a DIY raised bed, pressure-treated lumber may seem like a durable and long-lasting material to use, but many gardeners prefer to avoid it because of the risk of harmful chemicals leaching into the soil (the same goes for old tires). On the other hand, you’ll also want to avoid using wood that is prone to decay or is already showing signs of wear, such as from a pallet, or you may have to rebuild in a year. Instead, opt for cedar, oak, redwood, stones, and bricks, which make excellent, long-lasting, chemical-free choices.
5. Not Using the Best Soil
The bag says garden soil, so it must be good for every type of garden, right? Not so fast. Garden soil is intended to be mixed with existing in-ground topsoil to help improve its texture and nutrient composition. When used in raised beds, it can become compacted and inhibit drainage. Make sure you use bagged soil specifically designed for raised beds, which also has the advantage of being sterilized to kill any weed seeds, insects, or diseases in it.
6. Selecting Oversize Plants
When planting within the confines of a raised bed, consider the scale and mature size of what you want to plant to ensure you have enough room for some variety. For example, a single zucchini plant would take up an entire two-foot square plot. If you’re tight on space, plant smaller vegetables, opt for dwarf varieties, and practice succession planting.
7. Skipping Mulch
Even though your garden is off the ground, it’s still prone to weeds. Make sure to add a layer of mulch to help keep weeds at bay. The mulch also will help retain moisture around your plants’ roots so you won’t have to water as often. Plus, your produce will be cleaner because mulch will prevent rain from splashing soil up onto your plants.
8. Not Protecting Your Plants
While a raised bed may be enough to keep rabbits away, you’ve likely just put your precious produce at eye level for a hungry deer. The best way to deter deer is to install fencing you can easily reach over or remove to tend to your garden. You can also sprinkle an odor-based repellent on the soil, but it will need to be reapplied regularly.
