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Tips of Hydrangea leaves turning brown

My hydrangea is in a large pot and the tips of the leaves are turning brown but the rest of the plant seems fine. The rose in the same pot is fine. What is wrong with the hydrangea? thanks for help. Reader, Tourmakeady , Co Mayo Posted: 18/05/2017

Hydrangeas like moist, humusy, well-drained soil and tend to suffer from drought in a pot when they have filled it with roots. Roses are better able to cope but will eventually suffer too.

 Plant them out or move to a bigger pot.

 

  Diseased Camellia
 

Diseased Camellia

I am wondering if you can tell me what is wrong with my Camellias. Both are kept in containers in a shaded position outside my front door. One of them looks like it is dying, is leaves have turned brown as have the flower buds and the new leave stalks. I'd there any way of saving this plant? What can I do too prevent it reoccurring? I have included photos below. The second appears completely different, it is thriving with lots of new growth & a healthy leaf colour. However I've notice numerous amounts of small black insects under the leaves. There are also ants present. My initial treatment of this was to wipe the insects off which I did but more ahead each day. Is there a product I should use for better results? EmmaK, Donaghmede, Co Dublin Posted: 19/04/2017

This looks like root rot ... possibly just because it happens occasionally,

or possibly due to too much water and water-logging causing roots to die, which can be made worse by too little water, or no watering for a long period and then over-watering a plant already weakened.

 

Mulching & Water Access to new hedging

Later this month, (April) I will be planting 4ft high Portuguese laurel hedging (potted) topped off with a permeable membrane and bark mulch to prevent weeds. Question :- As new plants will require watering for a certain period until they get established, will the mulch restrict water access to the plant roots? sylvester, , Posted: 12/04/2017

The mulch will not impede water, and you would be best advised to set up a little drip-irrigation set, if the hedge it more than a few metres, or you can hand-water until they are rooted with good growth. The mulch will break down on the membrane and create a compost for weeds, better without.

 

watering containers

The weather has been dry for a while now and it seems likely to continue. Should I water some of my container plants? I am thinking here of the Camelia, Rhododendron, Hydrangea and Wisteria. None of them seem to be dry. I have miniature roses in the greenhouse but they don't seem to be too dry either. henlen, , Co Kildare Posted: 18/01/2017

It is important to keep shrubs in containers watered during winter, even when there is rain because rain is not adequate, as the evergreen shrub foliage often prevents rain reaching the compost.

The surface of the compost can dry a little between waterings but the compost should not dry out. 

 

Beech hedge problem

I have a beech hedge which I planted bareroot 3-4 yrs ago and it has never properly established. Each year in spring time the buds/leaves burst and flourish out and it seems like it is doing well, but then by around mid June, it seems to stop growing. Some plants die, some turn yellow, some wither away and it generally looks unhealthy. I do water it if we have any dry spells but doesn't seem to make any difference. I have lost about 20% of the plants each year and have been replacing them each winter but I need to find out what the problem is. How can I find out what the problem is? ShaneCrane1, Cootehill, Co Cavan Posted: 12/07/2016

The most common problem with beech is the soil too wet and heavy. Plant roots can be affected in winter and die back, the top yellowing then due to a reduced root system. Try hornbeam as replacements as it is more tolerant of heavy ground.

  Buxus Problems?
 

Buxus Problems?

I think it may be too late to save, one of my Buxus balls has turned yellow and basically looks dead?? I've given it miracle-gro and for some reason it hasn't come on I would like to know why you think this might be? In the picture you can see a second ball that has growth this season?? ColleranTM, Quin, Co Clare Posted: 05/06/2016

One probably dried out at some stage or else was waterlogged and roots rotted, creating similar symptoms.

Feeding a struggling plant makes it worse.

It is unlikely to recover. 

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