Keep your basil growing in winter

So, almost a year ago I wrote about how easy it is to grow basil (you can read about it here). What I hadn't realised at that point was that we were heading into winter. I had never attempted to grow basil in the garden in winter and I failed miserably!


As we head into winter, here in the Southern hemisphere, I thought it wise to share with you what I have learnt.

It IS possible to grow basil outdoors in winter. Basil has its origins in India and was cultivated in India and the Middle East, so it likes warmer climates. If your winter temperatures drop below 7 degrees (celsuis) then move your basil indoors. If you are leaving your basil outdoors make sure there is plenty of mulch on the ground to retain water. Damp ground retains warmth for longer. At night cover the plants with fabric, then remove in the morning to let the plants breathe. Plastic is not a good idea as condensation forms inside.

Basil outdoors

If you are moving your basil indoors choose well draining pots and prepare with potting soil and a good fertiliser. My go to fertiliser is organic bonemeal. For the best growth the pH of the soil should be between 6.0 and 7.2. Personally I have never bothered to test the soil because I have never had a problem growing basil indoors.

Prune the plant really well so that it isn't too dense. Remove all the unhealthy looking bits so that the plant can focus it's energy on producing beautiful, healthy new leaves. While you're pruning make sure you remove any bugs before you move the pot indoors.

Find a warm, sunny spot. A windowsill is usually a good place. If you do choose a windowsill make sure that it is well insulated and that the plant is not touching the window. Temperature fluctuations can damage the parts of the plant that are touching the glass.

Potted basil

Ultimately, we need to remember that basil is an annual and won't last forever. Allow it to flower and then save the seeds for spring planting. Then go ahead and use up as much of it as you can. I'd recommend making a huge batch of pesto and freezing it in ice cubes for quick meals. Pesto is easy and fun for children to make, so get them involved. Lexi's favourite is using the food processor.

You'll need:

A handful of basil leaves
2 cloves of garlic
1/2 cup of raw, unsalted cashews
1/2 cup parmigiano cheese
olive oil

Wash the basil leaves and throw the whole lot in the food processor. Slowly add the olive oil until the pesto reaches the consistency you prefer. Use immediately, or freeze in ice cubes for later use. Pesto lasts 3 to 4 months in the freezer. Alternatively, you can store it in the fridge (in an air tight container) for up to 5 days.

(click here for printable recipe)

Let us know how your basil fares this winter!

Happy gardening,
Candice & Lexi