Cucumber 'Telegraph Improved'

Cucumber ‘Telegraph Improved’ is an improved strain, derived from the original Telegraph Long a superb English heirloom variety that was introduced around 1897. It is the nearest old variety to a glasshouse type and was developed in England for growing in 'frames' (greenhouses) so is an excellent choice for cool greenhouse, but also does quite well when grown outdoors.
This vigorous improved strain is reliable and produces medium-long dark, smooth-skinned fruits with few seeds and an excellent mild flavour.

Telegraph Improved produces excellent crops of dark green cucumbers of perfect shape, around 30 to 45cm (12 to 18in) long Due to the long fruit, Telegraph Improved will need to be trellised to achieve perfect shaped fruits. The plant has a longish vine and the long narrow cucumbers will curl if they aren't high enough up to dangle.

Sowing: Sow indoors January to April or outdoors from mid May
From January to April, they can be started off in 7.5cm (3in) pots, and grown indoors, Place two or three seeds, on their sides, about 2.5cm (1in) deep per pot, which is filled with moist compost. Sometimes cucumbers transplant badly, handle with care and disturb the roots as little as possible.
Cucumbers can be sown in situ from late May when all risk of frost has passed and the soil temperature is at least 16C (61F). Prepare holes 30cm (12in) wide and mix in plenty of well rotted compost or manure. Mound the planting hole up slightly as this will help with the plants' drainage. Sow two seeds per mound placing them on their sides, about 2.5cm (1in) deep.
Cucumbers are warm season crops, with no tolerance to frost. They must have temperatures of between 18°C to 27°C (64-81°F). In cold areas protect the young plant with mulches or cloches. A thick mulch will also help retain water.
After they have germinated thin out the seedlings to remove the weakest. Seeds germinate best if kept at 20*C (68*F). Ideal night temperature should be no lower than 16C (60F). This temperature should be maintained for four to six weeks after the seedlings have been planted out, so harden off and plant out when all frost has passed.

Cultivation:
Nip out the growing point when the plants have about five leaves to encourage a stronger growth. Train up the supports tying in as required. When the plant has reached the top of the support, nip out the tip, two leaves beyond the last flower. Side shoots will then develop, producing more flower and fruit.
If allowed to trail on the ground nip out the main shoot when it has produced about 1.5m (54in) of growth and remove side shoots after one leaf.
The best forms are the all female ones. All female types may produce male flowers if they are grown under stressful conditions. These flowers should be removed. If grown in a greenhouse, keep it damped down to reduce any pests. Water regularly and feed with a high potash liquid feed every two weeks.
Keep an eye out for slugs and snails especially when the plants are young. If they become a problem, use a recommended proprietary brand of slug and snail bait. Try to avoid watering from above as this may lead to a fungal problem especially in warm weather. Pick off any badly affected leaves and spray with are commended proprietary brand of fungicide.

Pollination:
Flower and therefore fruit development is sometimes a little erratic at the start of the season. Generally the first flush of flowers will be mainly female. Female flowers have a small swelling (embryonic fruit) behind the petals. Most pollination is done by insects, but if fruit is failing to set, them the female flowers can pollinated by hand.
To pollinate by hand, take a male flower and remove all its petals, press it against the centre of the female flower. Pollen can also be transferred using a fine paint brush, taking pollen from the male stamen and brushing it lightly over the female stigma.

Harvesting:
Cut cucumbers regularly from about twelve weeks after planting. The sides of the fruit should be parallel and about 12 to 15cm (6 to 8in) long. Cut them with a short stem and check the plant regularly for fruit. Regular cutting will produce more fruit.
Cucumbers generally don't store for very long unless pickled, so cut and use the fruit while fresh. The fruits are eaten raw, pickled or cooked.