“The VegiVows”

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As an avid Margaret Atwood fan I devour her novels almost as soon as I can get my grubby gardener hands on them. But what with the move to, and all the renovations at the small holding I’ve not found the time to read.

With all the major DIY projects finally behind us this year, the main growing season over and the dismal, Fifty Shades of Kodak Grey skies, hampering any robot building efforts, I finally picked up Atwood’s The Year of The Flood. An aptly titled book, since it hasn’t stopped raining?! 

In the book we’re introduced to the “Gardeners” a vegetarian eco group who take Vegivows and cultivate secret roof top gardens to grow their own food in preparation for the coming of the waterless flood that will destroy civilisation. 

Even though Atwood’s “Gardeners” were not great fans of technology, I feel hydroponic technology is a great way to produce your own food when space is limited or you do not have access to a soil garden or allotment.  You can even do it on a window sill!

How Does My Garden Grow?

Simply put, plants grow in oxygenated water containing dissolved nutrients

The plants sit in small net pots filled with clay pebbles pebbleswith their roots growing in the air. A water pump then pumps nutrient rich water through a sprinkler system that sprays the roots. Surplus water drains back into the tank to recirculate. 

Last year we grew our winter herbs and salad leaves in an enclosed aero-hydroponic system, with artificial light and heated water.
crop

However this year, we’re trying to grow them in an unheated polytunnel with just natural daylight.
I’m not sure how well this will go, as they are predicting a harsh winter because of the possibility of La Nina weather front.

On the book tour for the The Year of The Flood, Atwood said they would follow what she called the “Vegivows” – a list of things to make the tour as green as possible. One element of these vows was to eat locally produced and if possible organic food. 

I guess the reason for NotJustPots is to abide by our own set of  “VegiVows.”

  • Grow as much of our food as possible.

  • Make everything from scratch.

  • And what we can’t – Know it’s provenance. Be it sourced locally or from small independent suppliers that grow or raise their products naturally.

Here’s hoping for some dry weather, so we can crack on with the robot build!

Leave the Soil at The Door

leadThere are four types of hydroponics we use at Not Just Pots – we use them for growing different types of things. Currently 2 of our 3 polytunnels are used for hydroponics of one sort or another.

Hydroponics at the consumer level is still a relatively new thing in the UK – so new that it’s fairly likely when you shop for the systems and supplies people will assume you’re growing weed not veg!

So here’s a quick roundup of the systems and what we use them for:

Seedlings for all these systems are propagated in wool cubes until they’ve sprouted and developed a good root structure.

NFT

(Nutrient Film Technique)
This is the kind of hydroponic system most people think of when they think about hydroponics. NFT systems have a constant flow of nutrient solution. The nutrient solution is pumped into the growing tray and flows over the roots of the plants, and then drains back into the reservoir.


There is usually no growing medium used other than air, which saves the expense of replacing the growing medium after every crop. Normally the plant is supported in a small plastic basket with the roots dangling into the nutrient solution.
Most of our lettuce grows in this and in the summer we can harvest one a day.

Aeroponics

The aeroponic system is probably the most high-tech type of hydroponic gardening. Like the NFT system above, the growing medium is primarily air. The roots hang in the air and are misted with nutrient solution. The misting is usually done every few minutes in some systems or continuously in others like ours. Because the roots are exposed to the

air like the NFT system, the roots will dry out rapidly if the misting cycles are interrupted so keeping an eye on these is vital.
We use this for fast growing herbs like Dill, Basil, Cilantro and Parsley.

Water Culture

The water culture system is the simplest of all active hydroponic systems. There are a few different ways to do this

    • The plants slot into foam mats that float directly on the nutrient solution. An air pump supplies air to a series of air stones that bubbles in the nutrientsolution and supplies oxygen to the roots of the plants.
    • The other type is a cascade system which is pumped and the falling water oxygenates itself. Air is incredibly important for roots – so if the roots are in water it must be well oxygenated.IMG_6388 (1)

Most of the time we grow our watercress in the cascade system – it thrives and keeps us in lovely peppery leaves.

On the floating mats this year we grew rocket (arugula), pak choi and spinach. We have grown herbs and leaf lettuce quite well this way too. If you want to build your own Water Culture system, there are details in this article https://notjustpots.wordpress.com/2017/07/20/building-a-watercressinator/

Flood and Drain

The Ebb and Flow system works by temporarily flooding the grow vessel with nutrient solution and then draining the solution back into the reservoir. This action is normally done with a submerged pump that is connected to a timer.
When the timer turns the pump on, nutrient solution is pumped into the grow tray or pots. When the timer shuts the pump off the nutrient solution flows back into the IMG_4511reservoir. The Timer is set to come on several times a day, depending on the size and type of plants, temperature and humidity and the type of growing medium used.
We use large Flood and Drain pots to grow Tomatoes, Tomatillos and Peppers

As for the nutrients we use – we only use them in the NFT and Aeroponics – the rest are plain water. As we come to the end of a growing cycle, we flush the plants with plain water.
As this is a water based growing system, the plants need to be fed nutrients to grow. Each type of plant has specific nutrient requirements, that is why we use several systems, so that we can put plants with similar tastes in nutrients together so that they grow well.

As we come to the end of a growing cycle, we flush the plants with plain water.

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It’s All About Da Herbs!

leadareo_herbFresh herbs  – What’s not to like? Apart from the sticker shock when you pick up one of those miserly bags from the supermarket. But it doesn’t have to be that way as they are so easy to grow from seed, even in small spaces. I read somewhere that 90% of all the_TDF4594 nutrient goodness is lost within 10 minutes of picking. Whether that’s true or not it’s so nice to grab a handful of the stuff to add flavour to the meals we cook.

Some of our herbs we grow in raised beds – Chives, Sage, Rosemary, Oregano, Thyme & Chamomile. Mint grows in pots as you don’t want to let it loose in open ground!

We grow our herbs in an enclosed aero-hydroponic system. The plants sit in small net pots filled with clay pebbles with their roots growing in the air. A water pump then pumps nutrient rich water through a sprinkler system that sprays the roots. surplus water drains back into the tank and recirculated. Periodically the water and nutrients are topped up, to make sure the growing conditions are optimum. Having said that they seem to grow pretty strongly even if neglected a little once they are established.

At the end of a growing season we empty the nutrient rich water into either our raised beds, garden or use to feed the fruit trees. So nothing is wasted.

Our hydro-aerponic tanks hold 40 small pots, so it is quite large but with everything hydroponic is is very scaleable. There are plenty of DIY hacks on the internet and even small scale windowsill options available.

With a system like this most commercial growers heat the water and provide additional artificial lighting to increase production yields. We don’t do this in the polytunnel , but it doesn’t seem to be a problem at the moment even with the off and on sunlight we’ve been having throughout July.

So what do we grow?

  • Basil Genovese
  • Cilantro (aka coriander)
  • Italian Flat Leaf Parsley
  • Dill

We tried growing Russian Tarragon from seed, as French Tarragon is propagated only by cuttings, but frankly we found it had none of the aniseed tones of its European counterpart.

So What to do with loads of herbs?

Here are just a few suggestions…

Nando’s style Macho Peas – Whole peas covered with mashed peas, mint, flat leaf parsley and red chili. Try swapping out the herbs for dill or basil. glass_herbOur favourite was basil and chili combo._BYS0025

Always looking for ways to spice up my veggies, I found a recipe for Bakla (broad bean salad) in “Middle Eastern Cookery” by Arto Der Haroutunian. Usually made with the whole young pods and eaten whole, I adapted the recipe for a quick mid week meal as I didn’t have time to follow the recipe to the letter but made use of the main ingredients, broad beans, mint and the aeroponic herbs  Dill and Parsleybroadbean

Cook the beans in water with a little allspice
Once cooked, drain and sprinkle the fresh herbs over the beans and chopped scallions
Toss in lemon juice and olive oil and serve.

Salad Dressing to accompany seafood and shellfish
Flat leaf parsley
Squeeze of lemon
Hemp or Olive Oil
Spot of Balsamic Vinegar
Whizz that up in a blender or food processor to toss with crisp green lettuce and french bean salad.