Any chunky sections of potato peel or pieces of potato that include an ‘eye’ on them (those small indentations from which the shoots grow) can be replanted to grow new potato plants. Simply take your potato scraps, leave them to dry out slightly overnight and plant them in the soil with the eyes facing up in exactly the same way that you would plant seed potatoes. Or just plant the whole potato.

Sweet potatoes can also be regrown from sections in much the same way as potatoes.

If a sweet potato is a little past its best for eating, you can cut it in half and suspend each half using toothpicks or twigs above a shallow container of water.

Roots should begin to form after a few days. Shortly thereafter, you should see sprouts growing out of the top of the pieces.

Once the sprouts grow to around 10cm in height, nip them off and place them with their bases in a container of water.

Roots will grow from the base of these shoots. As soon as the roots are growing, you can take these slips and plant them up in the soil.

All of these members of the onion family are excellent value for money. You can re-grow all of them from the rooting base of the bulb or stem.

Simply take a small section of the base of a bulb or stem, with the roots attached, and place it in a shallow dish of water.

Fairly quickly, new, green material will begin to grow from this base section. These re-sprouting sections can then simply be harvested again.

Alternatively, you can plant them out in your garden. Onions and garlic will form new single bulbs, while shallots will divide and form clumps, expanding your harvest each year.

Celery is one of the easiest plants to re-grow from scraps.

You simply have to cut off the bottom of the celery, remove some of the outer stems and place it in a shallow container with a little warm water in the bottom. The bowl should be kept in a sunny and relatively warm place.

After a week or so, leaves will begin to grow, and you can wait and harvest these as required, or replant the celery in your garden and allow it to grow into another full-sized plant.

Fennel is another vegetable that can be regrown in the same way as celery.

Again, simply place the base of the bulb in shallow water and wait for the plant to begin to re-grow.

Keeping the tops (where the leaves and stems join onto the root) from carrots, turnips, and other root crops will allow you to regrow them. But the whole carrot won't grow back! Only the leafy green parts which you can eat!

Place the tops in a container of water and new, green tops should begin to grow in a matter of days.

You can simply harvest and use these greens as they grow, or you can allow the roots to continue growing until the plants are ready to be transplanted back into the ground.

Many lettuces are cut-and-grow again. You can often continue to harvest the plants as leaves continue to re-grow.

You can also re-grow head-forming lettuces and other leafy crops simply by keeping the rooting section, placing it in water, and waiting for a second flush of leaves to grow.

Finally, lettuce, bok choy and other leafy crops can also often be regrown from individual leaves.

Some cabbages, like certain lettuces, can also re-grow while in the ground.

After cutting off the heads of headed cabbages, cut a cross in the base and leave it in the ground and a second head can often form.

Again, as with lettuces, cabbage bases and even cabbage leaves can also be enticed to re-root and form new plants.

A wide range of herbs can also be re-grown using plant cuttings/ scraps.

Simply place a stem of around 10cm long into a glass of water, making sure that the leaves are well above the water level.

Roots will soon begin to grow and as soon as the roots are growing well, these cuttings can be transplanted into containers, or directly into your garden.