Grow a Vertical Herb Garden in a Greenstalk Planter

Grow a vertical herb garden in a Greenstalk stackable planter
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An easy-water vertical planter for herbs, vegetables, strawberries, and flowers

There are two main challenges to growing edibles in containers – first of all maximizing space for plants, especially on a small patio. The other is watering. Each of your pot plants will need to be watered every single day. This can be draining both literally and figuratively.

What if there was a way to grow more in a small space while reducing time spent watering, as well as the amount of water you use? have come up with a solution and they sent me their stackable planter to try out.


Grow a vertical herb garden in a Greenstalk stackable planter

This vertical planter is perfect for growing herbs in

I had a long think about what I’d like to plant in my Greenstalk and settled on the idea of a vertical herb tower. It’s much larger than a traditional terracotta herb planter so the plants will have more space to grow to their full potential. I also decided to set my planter up in the greenhouse so that tender herbs like basil will survive. I live in a cool climate and growing some herbs is really chancing it.

I was sent the 5-tier planter in their ‘Stone’ color but in the end only used four of the five levels. I’ve put the last away for the future and when I eventually re-plant it up in a space with a bit more height. Even with the four tiers I had 24 planting pockets and I ended up using about 100 litres (3.6 cubic feet) of peat-free compost to fill it.

Grow a vertical herb garden in a Greenstalk stackable planter

The planter was easy to put together

The planter arrived in a compact bundle in the mail with very minimal packaging. It’s relatively lightweight too so the shipping cost isn’t too bad if you decide to order it online. The set comes wrapped together and includes:

  • Five stackable modules with 6 pockets each to put plants in
  • Watering disks that sit on the top of each module to regulate watering
  • Water reservoir for the very top of the planter – this is where you pour water in
  • A pack of non-GMO Marigold seeds for each planting module
  • A Gardener’s Guide for using the planter
  • Not included in my set but optional to order: a ‘Spinner’ or Lazy Susan for being able to turn the planter

Grow a vertical herb garden in a Greenstalk stackable planter

I put the planter together my own way

As you can see from the instructions above, the planter is simple to assemble. You fill each module with potting compost, plant it up, set the watering disk on top, then stack all the modules together. At the bottom of each module are ‘feet’ that lock into the module below. No tools are required.

I decided to fill the modules with compost as I stacked them because I wasn’t sure how heavy they’be be. It worked out fine but it was a little more difficult to put the plants in after. I think that if you’re sowing with seed you might want to try it this way. With plants, probably follow the directions to fill each one first and then stack them together.

Grow a vertical herb garden in a Greenstalk stackable planter

Grow a vertical herb garden in a Greenstalk stackable planter

I planted the planter up with a combination of thyme, basil, oregano, sage, and strawberries

The planter is circular and so plants can grow on all sides. The placement I chose for my planter makes sure that all sides get some light so I planted herbs and strawberries all around without too much concern. However, if you chose to place your own against a wall you might need to leave some pockets empty or choose plants that grow in shady conditions

As I planted each, I sprinkled organic fruit & veg pellets into each hole to give each plant an extra boost of food. Planted this way they’ll probably last a couple of years before they’ll need the compost replaced. A good initial watering and then we were set for watering it from the top water reservoir.

Grow a vertical herb garden in a Greenstalk stackable planter

One-stop watering

The most clever thing about this planter is that you only have to water all of your plants in one place. Literally fill the top of the water reservoir and the water will trickle down through the watering disks to give all of your plants a drink. It can save so much time.

I was a little unsure about when to stop watering though and when I first filled the reservoir I heard a gurgle that startled me. You’ll see my reaction in the video I put up next week! Hilarious I’m sure. You know when it’s time to stop watering when you see water flowing out from the bottom module.

Each of the watering disks that sits above a module is a mini water reservoir. It slowly trickles the water through small holes to the plants below.

Grow a vertical herb garden in a Greenstalk stackable planter

Attractive and compact design

I’ll need to wait out some time before I know how well the planter grows plants but I’m feeling pretty sold on it already. The design makes sense, the low-maintenance watering is attractive, and the entire piece looks modern. It’s made from PVC plastic that’s guaranteed to not fade in color for at least five years and I love the ‘Stunning Stone’ shade.

It’s also very sturdy and the minimalist design will likely stand the test of time. And then best of all, the planter matches my cat! Oh Cheebies, you hoped the green would be catnip didn’t you?



If you’re like to learn more about Greenstalk their website is includes a lot more information than I can give. They also have a really fun Facebook facebook page where they share photos of how different people have planted their own planter up. Definitely head over and check them out!

Grow a vertical herb garden in a Greenstalk stackable planter

2 Discussion to this post

  1. Sue says:

    That looks really ingenious, I’m very tempted.

    Is it a little bit fiddly to plant in the already assembled planter pockets though.? I guess things like Basil once they have finished for this year will need to be replaced and I have visions of it being awkward to then get a new plant neatly into the pocket.

    I do like the idea of a ‘one stop watering’ dish for all of the plants and I would have lots of room for the full five tiers in my net tunnel so I’m seriously thinking about this 🙂

  2. Paul Grant says:

    Oh cool! This one looks very interesting. And I agree that the entire piece looks modern. I like the idea of it being a low maintenance watering. Thanks for sharing this. 🙂

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