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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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I have a number of Erysimum (Bowles Mauve) plants. Should these be trimmed back to ground level or just pruned and will they grow back again?
I have 2 agapanthus plants growing with 3 years but have no flowers on them, I had 1 flower the first year but nothing since only green leaves,what is the reason for this.
I have several trays of sweet pea in the green house at present, they are about 6 inches in height, i also have a polytunnell, and wonder should i transfer them there, will they keep growing ,and should i put them in to larger pots, i read about a trial being done , some sown in april, and the rest in Oct. and the latter were the best .
I have had some good success this year with poppies and now have several withered stalks with seed heads. Should I collect the seeds and plant them or should I leave them to reseed naturally? If I should collect and plant, when should I do this?
Could you please identify this beauty which "appeared" in my garden some years ago. Evergreen "hairy" green leaves and dandelion like small orange flowers?
A small colony of ants have appeared all over the waste matter in my compost bin; are they a threat to the process or final compost?
About 3 to 4 years ago I planted Flame Creeper at the base of a Japonica shrub growing against a north facing wall. Thought it would give colour when the Japonica finished flowering. The creeper has now started to spread deep in the soil and I am afraid it is going to 'take over'. I think it may be on it's way into the neighbour's garden! If I have to lose the Japonica which is there years, so be it. Can you please tell me how I can kill it?
Could you please suggest a shrub for a large terracotta container on an elevated exposed site facing west close to the sea in the west of Ireland?
I have some calibrachoa planted in window boxes with good quality compost along with a bit of vermiculite, swell gel and slow release feeding. I have them planted up for about a month or more but have noticed where the leaves of some of them are turning yellow and wonder what could this be. They were planted up in the greenhouse and were taken outside about a week or so ago. Some of them don't seem to have been affected and have kept their good green leaf colour.
Some of the tulips I planted this year seem to be stunted and badly eaten-leaves and flowers. Some flowers are at ground level-some dont even seem to have leaves. Any advice?
Tops of some daffodils (three clumps) look burned or charred. They didnt flower this year and the tips of some of the leaves also appear 'burned'. Other daffs near them are unaffected but I am worried lest this 'burning' will spread.
I have noticed that something is eating my Daffodils before they have flowered, its looks like something just bit the top off the bud where the flower is, any idea what this might be?
I bought 2 big bags of daffodil bulbs last Autumn and planted them along the perimeter of my garden. I notice now that although most of the bulbs did produce foliage only a fraction of them have flowers. Apart from buying them cheaply what have I done wrong, and is there anything I can do now eg. feed/add fertiliser to hope they will flower next year.
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