Gardeners’ World 2021 episode 17: We are back with Monty at Longmeadow this week, where he catches up with all his summer jobs in the border and the vegetable garden. Carol Klein gets inspiration for planting combinations when she explores the garden rooms at Cothay Manor and Gardens in Somerset, and Arit Anderson goes to RHS Wisley to find out about their research into the variety and function of the different slugs and snails found in our gardens.
We celebrate an iconic summer flower when we travel to Staffordshire to meet a family who specialise in growing a huge variety of sweet peas.
Gardeners’ World 2021 episode 17
How to grow sweet peas
Discover how easy Lathyrus are to grow. Whether raising sweetly-scented annual sweet peas or cultivating perennial peas, this page will help you get started. When choosing between sweet peas and perennial Lathyrus, the main decision is whether or not scent is important to you. Then work out whether you’d prefer an annual or perennial. There are plenty of colour options too, as well as both climbing and more bushy types.
The biggest selection of sweet pea seeds can be found from online seed supplier, though many garden centres also sell a few in packets. Some nurseries and garden centres offer pots of germinated sweet pea seedlings in spring, designed to be separated into single plants and grown on in pots before planting out.
Seeds of perennial Lathyrus, such as Lathyrus latifolius, are available from a handful of seed specialists but many gardeners choose to buy them as plants. Our Find a Plant tool is a good way to find the one you want.
Rambling roses – Gardeners’ World 2021 episode 17
Rose pruning ensures that plants grow vigorously and flower well each year. If left, rambling roses can become a tangled mess of branches with very few flowers. Although often considered complicated, rose pruning is not difficult if you follow this guide. Ramblers are routinely pruned in late summer, after their show of flowers and hips.
Renovation can be carried out at any time between late autumn and late winter. It is easier to see what you are doing when the rose is not in leaf, plus there is a better response from the rose, which should grow back vigorously the following spring.
The black bean aphid often referred to a blackfly can be troublesome on some vegetables and other plants during spring and summer. There are many other species of aphid that are black. There are several species of black aphid that can infest garden plants, a very common blackfly is the group of species known as the black bean aphid, Aphis fabae group. These is a sap-sucking insects can form dense colonies on the soft young growth of many plants.
There are many other black aphid species for example cherry trees are prone to a different aphid known as cherry blackfly.
Black bean aphid are up to 2mm long and are mainly black but may have some white flecks on the upper surface of their bodies. Dense aggregations can rapidly develop on soft shoot tips, flower stems and on the underside of the younger leaves. The aphids are often attended by ants, which collect the sugary honeydew that aphids excrete the ants will also remove aphid predators such as ladybird larvae. Whitish cast skins of aphids often accumulate on infested plants.