Gardeners World episode 29 2016: There is a visitor at Longmeadow this week when Rachel de Thame lends Monty a hand as he refreshes his dry garden with plants that will thrive in tricky growing conditions. Monty also visits a national collection of vines to search out the best varieties for growing outdoors.
Frances Tophill travels to the heart of Wales to meet a couple who have carved out a garden 1,000 feet above sea level and, in the last of his series rediscovering rockeries, Joe Swift visits Chelsea gold medal winner and stonemason Martin Cook to see how he uses contemporary rock sculpture within his Buckinghamshire garden.
Garden doctor Nick Bailey is in Birmingham, offering intensive care to some neglected patio pots, while Adam Frost gets to work on renovating his rose pergola and laying paths in his kitchen garden. Alan Power visits Marks Hall arboretum in Essex, spending a day with the head gardener to find out what it takes to manage a landscape populated with trees, which range from ancient veterans to young seedlings.
Gardeners World episode 29 2016
Diseased raspberry canes
When Frances Tophill visited John and Christine Scott’s beautiful garden in Powys they asked Frances for help identifying what was wrong with their raspberry canes. Frances thought it might be raspberry cane blight. John and Christine sent a cane sample to the RHS Gardening Advice team who confirmed Frances’ diagnosis. The team thought that the split raspberry canes had probably allowed the cane blight to establish and that the split canes were an indicator of plant stress, possibly caused by a root disease such as phytophthora root and crown rot.
Vine weevil can be found in both container grown plants and those grown in open ground. The adults cause mainly cosmetic damage cutting irregular holes in leaves, usually between spring and autumn. Their larvae can cause serious plant damage feeding on plant roots. They are often not detected until the plant suddenly starts to wilt.
Check, (as Rachel did in this episode), the roots of all new plants for signs of infestation before planting out. Vine weevil larvae can be controlled by nematodes which are tiny parasitic eel worms barely visible to the naked eye. The nematode enters the larvae and, once inside, releases a bacteria which kills the larvae. Nematodes are best applied to the soil either in spring and/or autumn and are most effective when the soil temperatures are above 5C/41F.
Overwintering tender plants: lifting or mulching
Tender plants can be cut back, lifted and stored in a dormant state, or protected with a covering of organic matter (known as mulch). The decision on whether to lift and store or leave them outside under mulch depends both upon the plant and the local climate.