a beautiful raised garden bed overflowing with plants and flowers

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how to build a diy raised garden bed

By Rosemary Thorne

Published: 15 Feb 2025

My First Gardening Disaster (and how it inspired this whole project)

Let me tell you a story. Picture this: a bright-eyed, bushy-tailed twenty-something me, convinced I could conquer the world – or at least, my tiny balcony – with a flourishing herb garden. I ordered fancy terracotta pots, expensive organic seeds, and even read a gardening book (a real commitment, I know). The result? Wilted basil, sad rosemary, and a very dejected me. My little balcony looked like a botanical graveyard. It was a disaster. But, that disaster planted (pun intended!) a seed of determination. I knew I could do better. This time, I’d do it right. And that's how I discovered the joy of raised garden beds. They're the ultimate gardening game-changer! And I'm gonna show you exactly how to build your own.

a young person looking dejected next to a bunch of dead plants

a young person looking dejected next to a bunch of dead plants | Image: Supplied

Why Raised Garden Beds? Because they're AWESOME!

Seriously. Think about it. No more back-breaking bending over in awkward positions to weed or harvest. Raised beds make gardening easier for everyone! They also give you:

  • Better drainage: Say goodbye to soggy soil and hello to happy plants!
  • Soil control: You create the perfect soil mix for your plants, which can massively improve growth.
  • Pest control: Easier to manage pests as you can surround the beds with material that acts as a barrier.
  • Weed prevention: You'll significantly reduce weeding time!
  • Flexibility: You can place raised beds anywhere – even on a balcony or rooftop, just like my disastrous first attempt. But, this time, with the right tool!
A person smiling while working in a raised garden bed

A person smiling while working in a raised garden bed | Image: Supplied

Materials: Gather Your Arsenal!

Before you start, gather these essential materials. I've used these, and trust me, they're the bomb:

  • Untreated lumber: Cedar is a great choice because it's naturally rot-resistant. About 8-10 feet of 1x12s should do it. Don't forget to treat the lumber according to manufacturer instructions if necessary. A friend of mine nearly cried when her beautiful raised bed started rotteing after one season!
  • Screws: Exterior-grade screws are crucial. You'll need at least a hundred, perhaps more depending on the size of the bed.
  • Landscape fabric: This helps prevent weeds from sneaking in and keeps the soil contained.
  • Soil: Good quality topsoil. Don't skimp here – healthy soil equals happy plants.
  • Measuring tape: You'll want to make sure your bed is nice and square.
  • Level: To ensure your bed sits perfectly flat.
  • Drill/Driver: A cordless drill will make the job much faster.
  • Safety Glasses: Protecting your eyes is essential when working with wood and tools. Trust me on this one. That time I got sawdust in my eye really made me appreciate the value of eye protection.
  • Optional extras: Corner braces for extra sturdiness. I added them to my first bed and haven't looked back. There is also landscape timber you can use if you want to make a beautiful looking bed!
A collection of materials for building a raised garden bed

A collection of materials for building a raised garden bed | Image: Supplied

Building Your Bed: A Step-by-Step Guide

Okay, let's build! Here's how I made mine; you'll probably adapt this to your own needs:

  1. Measure and Cut: Measure and cut your lumber. Remember to account for the length of the screws. This might be the most crucial part of this entire project. Don't rush it.
  2. Assemble the Frame: Using screws, connect the pieces together to form a rectangular frame. Use corner braces if you’re using them to prevent any potential warping or collapse. This part can be tricky, so take your time and make sure everything is square and level!
  3. Line with Landscape Fabric: Place the landscape fabric inside the frame, making sure it's neatly tucked and ready to hold the soil. This step will prevent weeds from taking over your beautiful little project!
  4. Fill with Soil: Now the fun part! Fill the frame with soil. How much depends on the size of your bed, but remember this is your chance to really help the plant. A good tip is to mix in some compost for extra nutrients.
  5. Plant Away! Once your bed is filled, you’re ready to plant! Choose your favorite herbs, vegetables, or flowers.

Remember: There is no 'right' way to build a raised garden bed. Experiment with materials, sizes, and designs to find what works for you. Have fun with it!

A person assembling a raised garden bed

A person assembling a raised garden bed | Image: Supplied

Beyond the Basics: Tips for Success

  • Location, Location, Location: Choose a spot that gets at least six hours of sunlight per day. I had to move my raised bed several times until it was in the perfect place!
  • Water Wisely: Make sure the soil stays moist, but avoid overwatering. This can lead to rot and other problems, trust me, I know from experience.
  • Feed Your Plants: Regular fertilizing will encourage healthy growth.
  • Pest Control: Keep an eye out for pests, and take action if you see any. A friend of mine used a special mix of pepper and water, it worked perfectly!
  • Enjoy the Process: Gardening is about more than just the harvest. It's about connecting with nature and enjoying the journey.
A well-maintained raised garden bed with thriving plants

A well-maintained raised garden bed with thriving plants | Image: Supplied

“The glory of gardening: hands in the dirt, head in the sun, heart with nature. To nurture a garden is to feed not just the body, but the soul.” – Alfred Austin

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