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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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My son in law has a Red Robin tree in the garden of his recently bought house in Swords, so we can't tell how old it is. It is about 8 ft tall. He asked me about it today as it has black spot on the green leaves and the new red leaves are shrivelled and crispy, but not falling off. The spots are black and not red which makes me think it is not the disease that this tree can get. Could it be from the recent cold winds or frost? Would appreciate your advise.
Evergreen tree which has been burnt in sections, Not sure why or how to rectify it, do i need to cut it down or remove bad sections
I have a camellia with 5 or 6 years,but have no buds or flowers on it this year or last, had flowers on it for other years,was wondering what problem is and would I move it to another part of garden.
We have a damp area measuring 40 feet by 30 feet and were advised to plant Salix Alba Tristis here. On the internet we read that the roots can spread three times the distance from trunk to outer canopy. This seems huge. We think it was an American site. Will this hold true for Ireland? Is this tree suitable for us? Pauline P
I got/rescued this conifer from a nursery about 3 or 4 years ago. It was neglected and growing in a bit of peat. it didnt even have a pot on its roots. It is planted in my garden since. Worries me a bit as i dont know if its growing or not- i think it is a slow growing one anyway but the base is fairly brown. The trunk under the bark in fairness is quite green and the tips of the growth looks like there is new growth does it look healthy? after rescuing it i would love to see it doing well-its about 3 ft
Crimson Sentry maple planted about 5 years. never grew an inch i'd say. last year the leaves were tiny. miniscule. a lot of the branches seem to be brown under the bark- would i be foolish to leave it or should i replace it. photo below seems to show a bit of green under bark but the branchlets are predominantly dead
There' s white growth on dead roots of frost-killed Viburnum (winter 2010) Is this harmful especially to young Variegated Privet planted last Spring? To the soil in general?
Variegated Privet hedge planted last Spring. Was flourishing with plenty of leaf up to c. end Nov. Loss of leaf completely spreading from ground upwards. Normal? If so does this mean I'll have no hedgecover for 3to 4mnths annually?Or are plants dying?
I planted 2 rows of hawthorn shrubs last year on hillside entrance laneway. They are 2 feet high now but weeding is very labour intensive . Row length is 100ft. I'm advised to place pearmeabile plastic sheeting along rows to suppress weeds. They say rainwater will get through but I'm worried because of medium gradient of hillside. I'm concerned that plant will be starved of rainwater. Can you please advise?
I have attached photos of my Fuschia Gertenmeister, which as you can see from the photos has damaged leaves, can you please give me advice on this. No insects have been spotted on the plant but holes are obvious.
There is a silver birch tree in my garden which appears to be decaying. please see the attached picture. Do you think that the tree should be cut down or is it possible to save it somehow. Also, if it is a prevalent disease, is it possible to prevent it spreading to other trees? It would be great if you can answer soon as I am concerned that the tree may fall down.
Acer Palmatum. Roughly 20 years old. Last 2 yrs. has lost leaves early and now has lots of dead twiglike branches. Was told to leave it last year and feed it in spring. Situation is bad now. Fungus was mentioned as the cause. There is also a False Acacia near with the same problem and on BBC Gardening same tree with film was shown. Fungus was given as reason. Is this the same for the Maple and is there any hope?
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