How to grow vegetables in a foam box

You can grow garden vegetables in most containers, but thermocol boxes are ideal. They are light, easy to manage, and the foam helps insulate the roots.

Use deep boxes to give your veggies plenty of space to grow their roots. This is particularly important for larger vegetables. If you can’t find a really deep box, cut the base off one and stand another in it to give you the extra depth needed for a tomato or cucumber plant.

What you will need

  • Foam or thermocol box.
  • Trowel.
  • Soft potting mud.
  • Compost or aged cow manure.
  • Bricks.
  • Seedlings.
  • Seaweed plant tonic.
  • Mulch.
  • Water.
  • Shade Cloth.


Getting started

1. Getting started

Gather your equipment, including a thermocol box

Drainage and potting mix

2. Drainage and potting mix

Make six holes in the base, three on each side. These provide drainage.

Use a good quality soft potting soil to fill your box. Mix well-rotted homemade or bought compost or aged cow manure into the soil. Compost or manure helps the mix hold water and provides nourishment for your vegetables. Around 10–30 percent compost or manure is beneficial.

Elevate the boxes slightly by placing them on bricks to help them drain. Select a spot for your veggie boxes in full sun or with morning sun and afternoon shade. Now you’re ready to plant.

For fast results, use some advanced lettuce or other seedlings. If you’re willing to wait a bit longer and want to save some money, sow some seeds, planting just a few at a time. Reseal the seed packet and keep it in a cool dry place so you can gradually plant the remaining seeds.

Less is more

3. Less is more

The key to success is not to over plant. Restrict yourself to four spinach plants, or a couple of herbs, or one tall tomato or cucumber per box. If you want more produce, start more boxes, but plant gradually so there are always some crops coming on. This way you avoid a glut.

Water in new plantings with a seaweed plant tonic then spread some mulch such as pea straw, sugar cane or lucerne around the plants. This helps keep the roots cool and moist. Spread the mulch loosely so that water can still penetrate easily.

4. Regular care

Veggies in containers should be inspected and watered daily – more frequently in very hot weather. Use a watering can on non-watering days. Try to recycle clean wastewater from the house to water the veggies. Add some liquid plant food to their water every week.

Vegetables need lots of sunshine but new plantings can be burnt by a really hot sun, so it’s a good idea to shade new plantings until they are well established. Either keep them in a sheltered spot for a couple of days or cover the containers with some shade cloth.

Start your own built thermocol veggie box today!

Share your ideas and experiences with Vandana at 9535025938 or drop in a mail at

Credit: HomeLife


Comment: (1)

sanjay kandalkar

August 27, 2015 | Reply

very nice information of waste use for growing vegetables

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