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Chillies

Chillies and peppers love the heat and need a long season to mature their tasty fruits. It is possible to grow them outside in the UK, but they will produce much bigger crops in a greenhouse or conservatory. You can raise plants from seed or buy small plants, although you should aim to have plants ready to be transplanted as soon as the weather warms up in April.

General Care

Seedlings and young plants can be planted out as soon as they are well established and have roots showing. The appearance of the second true leaves is an ideal sign that plants are ready to be potted out. Plant them in moist compost in small pots (8-10 cm) and make sure that they are well located in the medium so that the bare stem is well covered in compost right up to the first set of leaves.

This will allow the development of new root structures up the stem and add strength to the plant. Depending on the cultivar you may have to pot up the plant again in a few weeks time. Do so when the roots are clearly coming out of the pot.

Once the risk of frost passes you can put the plants outside. Initially, you might want to harden them off by placing them outside for just a few hours a day. You can pot them up in big pots or directly into the soil but both chilli and pepper plants need a well-drained substrate.

Chilli plants require much sunlight. In terms of temperature, chilli plants can be treated as half-hardy annuals. The temperature requirements may vary according to the cultivar with a minimum of 12°C.

Water, as needed to maintain the growing medium, is just moist but not wet. Never let the soil dry out completely. Larger pots require less frequent watering than small pots, pots in full sunlight will need more watering than pots that are in light shade for part of the day.

A small plant in full sun may need watering every day. When you water, make sure you water deeply so that the water gets down to the roots where the plants need it, rather than just wetting the top where it will evaporate away. When in their vegetative stage, chillies will benefit from feeding every week, ideally with a specialist feed such as Chilli Focus. When flowers appear the strength of the feed can be increased as well as the frequency.

Pinch out the growing tips occasionally to encourage them to bush out. Plants may need some support from branches pushed in around them or they can be tied to a cane.

As the plants grow, small, normally white flowers will begin to bloom. The flowers will begin dying after a few weeks and chillies will form. Soon after, the flower's petals will drop off as the green middle starts swelling, which is the chilli pepper growing. The plant will continue producing fruit into the autumn and perhaps beyond under favourable temperature and conditions. Chillies and peppers can be harvested green or when in colour.

Pests & Diseases

Chillies growing in this country are largely trouble-free. In very warm, dry conditions they may be attacked by red spider mite (you will see very fine webbing and tiny little mites on the underside of leaves). Sometimes aphids can be a problem especially during the early stages of growth. The answer for both of these is to use an organic fatty-acid type spray such as SB Plant Invigorator, which is suitable for use on food crops. This suffocates the pests without damaging the chillies.

Related Products

An advanced multi-application nutrient solution: A media soak to give your cuttings a head start Seed soak for exceptional germination every time A first feed for young plants Available in 300...
Medium horticultural grade vermiculite for better germination, moisture retention and healthy seedlings. Available in 3 litres and 10 litres.
Houseplant Focus Repotting Mix is peat free and is designed for best results with the widest range of houseplants. A free draining mixture helps to promote healthy root growth. It contains sterilised...
Propagation cubes that are moulded from organic materials.
Rooting Hormone Gel
Accurate readings. No batteries needed. No more overwatering or dry plants – check the soil moisture, and water when needed. Ideal for houseplants.
Uniform, lime-free and washed. Available in 3 litres.
Houseplant Focus Seed & Cuttings Mix is designed for best results with the widest range of seeds and cuttings. It is free draining to allow healthy root initiation and growth while minimising any...
Perlite is an amazing medium for Pot Culture with superb capillarity and moisture retention. Available in 100 litres.
Coarse-grade perlite for improved soil drainage, aeration, and root growth. Available in 3 litres and 8 litres.
Medium-grade pebbles (8–16 mm) for terrariums, humidity trays, and repotting mixes, in a handy retail size. Available in 3 litres and 10 litres.
Specifically formulated to produce bumper crops of juicy chillies and peppers. Chilli & Pepper Focus is expertly formulated for optimum growth of chillies and peppers in pots, grow bags or in the...

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