Make the first pinch at six to eight true leaves
Pinch out the growing tip of a basil plant and two side shoots rise from the joint below it. Left alone, a single stem runs straight up, flowers at the top and that is the end of it. Make the first pinch at six to eight true leaves, when the plant is six to eight inches (15 to 20 cm) tall.
Too early and the plant has not got the strength: the side shoots come out thin and stall. Too late and the lower joints have gone woody and the buds there will not move. Six leaves, with a firm base, is the dividing line.
- Cut above the second joint from the top Count down two joints from the tip, find the joint where you can see the side buds, and cut just above it. Two shoots will rise from that joint.
- Use clean scissors Tearing with your fingers crushes the stem, the wound does not dry, and it rots back. Cut cleanly and horizontally just above the joint with sharp scissors.
- The tip you cut is worth eating The tip you pinch out is the tenderest, most aromatic part of the plant. Use it that day. This is your first harvest.
For a few days after pinching the plant seems to stop. Once the side shoots move, it grows faster than an unpinched plant ever would.
Always cut immediately above a joint
Cut in the wrong place and you get no extra shoots. Cut halfway between two joints and the stub above the joint dies back, which looks bad and delays the new shoots. Find the small buds at the base of a pair of leaves and cut above them.
- Find the buds Look closely at the base of a pair of leaves and you will see two green buds the size of a grain of rice. Those are the shoots you are trying to release. Cutting above a joint with no visible buds gains you nothing.
- Leave about a quarter inch A quarter of an inch (5 mm) above the buds is enough not to damage them without leaving a stub. A longer stub dies back brown.
- Leave the lower leaves The leaves at the base are doing the photosynthesis. Removing them for the sake of tidiness makes the next shoots thinner. Take off only leaves that have yellowed.
- Let the cut dry Cut just before rain and the wound stays wet and rots. Cut on a dry morning and it seals within hours.
Wipe the scissors between plants. Cutting a healthy plant with a blade that has just cut a diseased one moves the disease straight into the wound.
Each pinch doubles the number of shoots
One pinch gives you two shoots, pinching both gives four, then eight. The number of leaves follows the number of shoots, so how much basil you pick over the summer is more or less decided by how many times you pinch. The difference against an unpinched plant runs to several times the crop.
It does not go on forever. Once the shoots are getting thin and the leaves small, the multiplying stage is over. From there, switch to cutting shoots back as your harvest, keeping the shape of the plant while you carry on picking.
| Pinches | Shoots | The plant |
|---|---|---|
| None | One | Runs up and flowers in midsummer, then finishes |
| First | Two | About eight inches tall and starting to spread |
| Second | Four | Becoming a rounded bush |
| Third and after | Eight or more | Once leaves get small, switch to picking |
Repeat every two to three weeks
The next pinch comes when the shoots from the last one carry four or more leaves. In the fast growth of high summer that is about two weeks, in cooler spring and autumn weather nearer three. Judging by leaf count rather than by days keeps you right.
| Season | Interval | How much to take |
|---|---|---|
| Late spring | About three weeks | The tip only |
| Summer | About two weeks | Up to a third of each shoot |
| Early autumn | About three weeks | Tips and flower spikes |
| Late autumn | Stop pinching | Cut the whole plant at once |
Pinching and harvesting are the same job. Cut what you need for cooking from the tips of the shoots and you have pinched the plant at the same time.
What happens if you never pinch
An unpinched plant runs up on a single stem and throws a flower spike at the top in early summer. Once the flower takes the resources, the leaves come small and tough, the stem goes woody, and no new leaves come from it. You lose about two months of picking.
Even if you notice late there is a remedy. Cut the whole plant hard back below the flower spike and the remaining joints will push new shoots. Cut to a height that leaves two or three pairs of leaves.
- A plant that has started flowering Cut back to two joints below the flower spike. Leave leaves on and new shoots rise within a fortnight, giving you picking into autumn.
- A plant that has gone woody Woody stem rarely shoots, so cut down to where there is still green. If there is no green above the base, accept that the plant is finished.
Root the shoots you cut off
The shoots you pinch out will root in a glass of water. Basil roots quickly, and in warm weather you will see white roots in seven to ten days. It is a cheap way to increase your plants without buying more, and worth remembering when you are not picking enough.
- Stand them in water Take a four inch (10 cm) shoot, strip the lower leaves and stand it in a glass of water in bright shade. Change the water daily.
- Pot up at an inch of root Plant once the roots are an inch (2 to 3 cm) long. Left in water too long, the water roots do not adapt to compost and the plant checks after planting.
Take cuttings in the first half of summer. Anything struck later will not make a useful size before the cold arrives.