Grow More by Interplanting

This is the time of year when we apire to garden greatness. We look at our freshly turned soil, the rising temperatures, and the glorious plants and seeds on sale at our local garden centers. We usually manage to sneak off to a plant sale unsupervised at least once, and we come home with more plants than we have space. (We've all been there, right?) If you've accidentally bought more plants than your garden can hold for the umpteenth year in a row, maybe this post can help you out.

I maximize the space in each of my raised beds through a process called interplanting. Instead of dedicating separate precious square footage to spring crops and summer crops, I plant many of them alongside one another. It's pretty easy to do. 

Mature radishes surrounding a tomato seedling

Mature radishes surrounding a tomato seedling

Here are some ways you can interplant your garden:

An interplanted bed of peppers, lettuce, and pole beans

An interplanted bed of peppers, lettuce, and pole beans

  • Are you looking impatiently at the seedlings in your tomato bed, trying to hurry them along? It will be weeks before they really spread out, so utilize the real estate surrounding them for quick crops like radishes. I planted radishes among my tomato seedlings and zinnia seedlings. Right about the time that the tomatoes and zinnias start growing up and out rapidly, it's time for the radishes to be harvested. 
  • I also like to take advantage of shade provided by vertical-growing crops like pole beans. In this bed, I planted pole beans along one side and peppers along the others. It will be several weeks before the peppers really spread out, so right down the middle, I planted some lettuce seedlings. The lettuce will be kept cooler in the afternoon sun from the shade of my pole bean trellis. By the time the peppers start encroaching on the space in the middle of the bed, it will be time to harvest the lettuce. I also trained pole beans to climb up over my low tunnel hoops and planted kohlrabi underneath. Again, the shade from the pole beans will extend the growing season for the cool weather-loving kohlrabi. 
  • You can also interplant with flowers. This season, I planted two rows of cosmos seedlings into my raised beds. I knew it would be several weeks before they would take up the space in the middle, so I transplanted some sunflowers down the center. I've harvested the sunflowers, and the cosmos are just now flushing out. 
Sunflowers harvested from the interplanted bed (pictured behind) of cosmos.

Sunflowers harvested from the interplanted bed (pictured behind) of cosmos.

Make the most out of every nook and cranny by pairing slower growing summer crops with quick growing spring crops. 

How do you make the most of limited square footage? Do you have any interplanting tricks? Share them below! 

Happy growing, 

Mary Riddle

Zinnias and radishes

Zinnias and radishes

The Great Pumpkin Challenge, Part One: Double Digging

One of the best things about growing for a school is the freedom to explore and learn about new crops right alongside my students. This winter, I got a bee in my bonnet to try out a crazy crop I've never grown before: Dill's Atlantic Giant Pumpkin, the granddaddy of all giant pumpkins. 

I love the whimsy of a giant pumpkin. It brings to mind images of Hagrid's garden or Cinderella's carriage. There's a problem, though. I have horrible luck with all plants in the squash family. Growing without the aid of synthetic chemicals, I can only get one or two early rounds of squash from a plant before I'm beaten my two greatest nemeses: squash bugs and squash vine borers. To be honest, I'm a little nervous about growing a pumpkin at all, much less the world record-holding species for size and weight. Go big or go home, right? 

If everything goes well and I actually produce a pumpkin, it won't be ready until fall, but it's time to start the growing process now.

Healthy plants come from healthy soil. Last summer, I added about ten cubic yards of pure cotton burr compost to this raised bed. Over the fall, I grew radishes, beets, mustard, chard, lettuce, spinach, and turnips in it. I got too busy and ran out of time to plant a good winter cover crop, so I just mulched unused areas of the bed with straw. (Healthy soils want to be covered at all times!)

Here's what the bed looks like now.

I've started to rake away the straw mulch that I used over the winter in order to double-dig this behemoth of a bed

Double-digging is a soil preparation technique associated with the Biointensive growing method. According to Ecology Action, double-dug beds "aerate the soil, facilitate root growth, and improve water retention." Soil fertility is maintained through the heavy use of compost.

To get started, you measure off the area that you want to dig. I'm starting with a 2 x 20 foot section. I set out flags to show divide the area in 2 x 2 foot squares. 

Before you dig, please make sure that the area is free from water or gas lines. 

mary riddle double digging

Start with your first square and shovel the top 12 inches of soil into a wheelbarrow. Then, take a pitchfork and loosen up all of the newly-exposed soil underneath. I don't move on until I can sink my pitchfork in 12 inches without effort.

Move on to your next square. Shovel the top 12 inches of that square into the empty hole you just created. Again, take your pitchfork and loosen the exposed soil. Repeat that process with square after square. When you reach the end, fill the final hole with the soil waiting in your wheelbarrow. 

To ensure that I'm not compacting the soil when I'm working in the beds, I stand on a plank in order to more evenly distribute my weight through a larger area. 

I've got a lot more of this bed to finish. This is an intense workout, so my back demands that I take my time. I'm getting started now so that I can be ready to transplant pumpkins into the bed by Zone 7's April 15th final frost date. 

Stay tuned. You can follow along with #TheGreatPumpkinChallenge on my social media pages

Keep your fingers crossed for me! 

Mary Riddle

Look at that nice, fluffy soil! Now where did I put that Instagram filter that removes all those weeds?

Look at that nice, fluffy soil! Now where did I put that Instagram filter that removes all those weeds?