Martian Mushy Pea & Mint Soup

Seed trays, modules and pots

The focus on food waste tends to be on the fresh items we don’t manage to eat before they go past their sell-by date, but in our house there are plenty of pantry items that are hidden from view and remain unused, and my Inner Womble has been inventing ways to make use of them. Now that I’m at home for lunch, making fresh soup and bread is a good way of dealing with both of them – a blended soup can hide a multitude of less-than-perfect food items, and an inventive bread recipe can make use of some as well.

When plants are grown in the soil they can send out roots, make friends with fungi, and source their own nutrients from their surroundings. In gardens we help them do this by improving and feeding the soil, a topic I will be returning to in chapter four. But when they’re confined in containers plants have a limited volume of soil and therefore a limited amount of nutrients to tap into.

Soil isn’t one thing, it’s a collection of different things that come together to make the life-giving, plant-growing ‘dirt’ that we love. We have a tendency to poison it, cover it over and generally forget that it’s there, but good soil is the heart of a good garden and something we should pay a lot more attention to.

An ideal seed compost is able to retain water, whilst at the same time letting excess water drain away to provide an environment that is damp but not waterlogged. It allows penetration of plant roots and is able to anchor plants, but has space for air. Its texture is consistent, and it is free from pests, diseases and weeds that would compete with the seedlings. As we have seen, it doesn’t need to contain many nutrients if seedlings are going to be pricked out; seedlings growing in modules will either need enough nutrients in the compost to support them through their first weeks of life, or suitable supplementary feeding.

There is a big trend at the moment in recycling containers to use in the garden (we’ve already touched on it with recycled food containers used for raising seedlings). There is also a large range of containers you can buy – from cheap plastic pots right through to enormous designer urns. What you choose is as much down to your budget as it is to your tastes, but all containers need to hold a suitable volume of potting compost and retain water whilst allowing any excess to drain away. If you are recycling containers to use for food plants then be sure that they’re clean and that they weren’t used to store anything toxic in their previous life. And remember that not all plastics are UV stable – some degrade when they’re exposed to sunlight.

When a seed sends out its first shoot and it rises above the soil level, germination is over and seedling development has begun. This is a particularly vulnerable time for the plant – it is running out of stored resources and needs to start collecting its own food. In this period of rapid growth it is also particularly at risk from pests and diseases.

When I set about blogging The Peat-Free Diet it was an experiment, an journey into the unknown. My aim was to provide gardeners who want to garden without the use of peat with the information they need to do so, and the book evolved into a gardening primer that assumed peat was not on the menu. My love of science made more of an appearance than I had anticipated and there are plenty of big words to cope with, but it is my hope that they are presented in such a way that they are not hard to swallow.

Potting on

It’s a little bit early to hope for fresh homegrown peas, but I made this last night and it went down a storm, so it’s worth using up the last of your frozen harvest (or shop-bought frozen peas) for this. And if you’ve been sprouting pea shoots this winter, they make a lovely garnish.

Two researchers from the University of Central Florida – Kevin Cannon and Daniel Britt – have been looking at how a Martian colony might feed itself. Although NASA has been growing some food on the International Space Station, its goal is to supplement the vitamins and minerals in a standard astronaut diet and to improve crew morale – it’s not about making a space station, or a colony, self-sufficient.

The Pantry contains information about some of the items that are useful for a peat-free gardener, and gardening terms you may come across on your peat-free travels.