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Over the years, Gerry has answered more than 5,000 of your gardening questions. His knowledge is based in science and practical experience, and by working on radio and television.
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This lilac was planted four years ago and is 8 to 9 feet in height (see photo) As I don't wish to let it get too large for its present location, can you advise, please: When and how should pruning be done?
When is the best time to cut back? How best should I cut the shrubs back? Should I remove some of the shrubs? Are these shrubs suitable?
We cut down a large variegated Poplar a few months ago as it was rather too close to an old barn. There are lots of suckers rising from the roots which are near the surface and I was wondering how we can get rid of these.
Moved group 2 clematis end of summer last year. Should I prune to 18 inches this spring? One is already sprouting. Nellie Moser and Niobe.
House purchase - Line of mature leylandii are on boundary. Causing darkness, debris on driveway and major drought on one side of house. Like them as they shelter house however dreading high winds or storm. Looking for suggestions on what to plant underneath as the soil is powder dry. Roots are huge and are affecting location of plants. Have planted lavender and salvia hot lips as well as some grasses but looking for more suggestions.
Have to cut back a mixture of different shrubs that have exceeded their space. I know that pruning now will give risk of infection in pruning cuts. New growth should harden off before winter as far as I know. Some will have to be cut back hard as well. Any advice?
The new growth on red robin plants are inclined to sag forwards and downward to the ground. My question is, should I stake them upright with bamboos before trimming the side of the hedging, or trim as they are. The only thing is if I trim as is, I will be cutting approx. 12 to 18 inches off any plants growing tip that's leaning forward and down. It is a relatively new hedge and is only 3 feet in height and I wish it to grow up to 10 feet. Also, there is a dividing blackthorn hedge directly behind it, will it hinder/impact the red robin in any way? Is it necessary for it to be removed at this stage or can this be done later?
When is the best time to cut back my heathers which are in bloom at the moment?
I've a wooden arbour in the garden (which has good soil throughout) and there are some mature climbers on it: honeysuckle, clematis & jasmine which get trimmed every year.There was also a mature sycamore beside the arbour which was cut down last November and the trunk poisoned to kill it off.A sewer line about 4.5metres away from these plants was inspected recently and there are some roots showing at a depth of 1 metre down. I'd be much obliged if you'd offer and opinion as to the likelihood these belong to any of the climbers ?
Wisteria is well established, growing along a fence, c 30 m long, straggly & bits are somewhat bare at this time of year. Probably need someone to prune it properly, even if I lose a year.
Recently in 'The Irish Garden' I saw a recommendation to prune a daphne. I had always believed any cutting of a daphne was wrong, even cutting flowers. Please advise, should I prune daphnes now? Thanks and happy new year.
I have a small pale pink early flowering clematis. the roots are well protected. I have always cut it back but last year I left and it is budding half way up the stem. will I leave it as it has never really establied well and is still very stringy looking. it is about 5 years old.
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