If we look at summer alone, the bush basil grows splendidly even far from its tropical home. In winter, however, the tide could quickly turn, as the frost has already brought many plants to their knees. Is this also a concern with shrub basil?
Tree basil detests frost
The plant, which comes from areas of Asia and Africa that are warm all year round, is not genetically adapted to our winters. It has retained its sensitivity to frost, which is why this herb is not considered winter hardy in this country. That's why the usual winter protection measures in the garden are a waste of effort for him.
Cold is also unpopular
Even low temperatures are not good for edible basil. As soon as the temperature drops below 10 degrees Celsius, you have to forego fresh air and move into the house.
If the outside temperature fluctuates significantly in autumn, hibernation can be interrupted for hours or days. Even though it takes some effort, give this aromatic herb every hour of sunshine it can get.
Basil has to overwinter in the pot
If you cultivate your bush basil in the pot with foresight, things will be easy in autumn. In the garden bed, however, dirty work still awaits. The basil needs to get out of the garden soil and into a pot. This should definitely be large and have drainage holes. Dig the plant carefully so as not to damage its roots.
Finding safe haven
From spring to autumn, the basil can still be kept in a warm room. However, its place in winter should be a little cooler so that the perennial shrub basil gets a break.
- Winter frost-free and cool
- Temperature values of 15 to 20 degrees Celsius are ideal
- never make it warmer, avoid near the heater
- the room temperature must not fall below 10 degrees Celsius
- Tree basil needs light
- if applicable. Set up a plant lamp (€89.00 on Amazon)
- maintain a minimum of care
- water regularly with small amounts of water
- provide herbal fertilizer once a month
Tip
If the bush basil is very sprawling, you can cut it before overwintering. This makes it easier to find space in a cramped winter quarters. The cut branches are a useful cooking ingredient or can be used as cuttings for propagation.
Harvesting in winter
Harvesting doesn't have to be over in winter. You can shed shoots from the shrub at any time. But be a little more conservative when it comes to the quantity, because the basil will not grow back as quickly in winter quarters as in summer.
