![]() A number of applications may be necessary. Do not compost them.įood-grade Potassium bicarbonate at a rate of 5 grams per litre of water sprayed until run-off has been shown to control powdery mildew on many plants and is now used commercially. Clear up any diseased leaves to prevent re-infection and burn or dispose of them. Disinfect the tools before using them on other plants. ![]() ![]() If the leaves look particularly unsightly, you can prune them off with a pair of secateurs or a hedgetrimmer. There is normally no need for chemical control as the plants will grow through the disease once the growing conditions change to become less humid. Once the powdery coating dies off, the leaf will have brown patches or be completely brown and withered. SYMPTOMSĪ white powdery coating on the leaf, particularly the underside of the leaf. Powdery Mildew will not threaten the life of the plant but may look unslightly. Rainfall or drier conditions can interrupt the spread of the disease. Powdery mildew is a fungus that can infect the new young leaves on Prunus laurocerasus under humid conditions and between the temperatures of 6 to 30oC. Trim your hedge to the height and width you require once a year and you will get a dense, bushy, evergreen screen that will last a lifetime. It is your responsibility under the Anti-social Behaviour Act (2003) to ensure that your hedge does not grow to a height where “reasonable enjoyment” of their property is being adversely affected. If your hedge is on a boundary with a next door neighbour, it will need to be trimmed on their side as well. We use a hedgetrimmer to trim our laurel hedge every year. This will look untidy but if you prune when the hedge is growing, it will cover up any tatty leaves in no time. As mentioned above, if you use a hedgetrimmer, it will cut through some of the leaves. Laurel hedges can be trimmed using secateurs or with a hedgetrimmer. The best time of year to prune is late spring/early summer as there will be lots of new growth at this time of year to cover up any “tatty” or damaged leaves caused by trimming with a hedgetrimmer. Even a hot weekend in the summer can cause them to dry out so it is best to keep an eye on them every few days.Īll types of laurel hedge need to be pruned once a year. The leaves of your laurel plants will quickly turn yellow and start to fall off if they are not watered enough (or if they are over-watered). Obviously, if the soil is already wet enough, then don’t water your plants. You want to keep the soil moist but not soggy at all times. Do this by pushing your finger into the rootball of the plant or digging with your hand in the soil near the plant and seeing if the soil is wet enough. However, it is very easy to over-water your plants with porous pipe so our advice is to check whether the soil is wet before turning it on. It can also be set on a timer and come on regularly. The water seeps out and sinks into the soil well. Porous pipe is a good method of watering your hedging plants. This way you will make sure the water gets right down into the soil rather than just watering the top few inches of soil.W WATERING WITH A POROUS PIPE Return to each plant a water it again two or three times, each time letting the water sink in. If you are watering with a watering can or hose, you need to water the soil around the roots of the plant and when the water starts to run off, move to the next plant and let the water sink in. It sounds obvious, but often people water when their plants are already wet and this can result in waterlogging especially on clay soils. If the soil is starting to dry out, then water your plants. WHEN TO WATERīefore you water, test the soil by digging into it with your hand or pushing your finger deep into the rootball (you need to make sure you’re not just watering the surface but right down into the soil as well). If you plant between March and October, you will need to water your plants for the first growing season (usually up until the end of October). LAUREL HEDGING PLANTED FROM MARCH TO OCTOBER Just keep an eye on them, it may be worth giving them a good soak once a week. If you plant between November and February, you may not need to water your plants much as they will have had a chance to develop a root system before the soil dries out which is normally in March but can be in February or April. LAUREL HEDGING PLANTED FROM NOVEMBER TO FEBRUARY During the winter months, they use less water and normally get enough from the rain. Usually plants only need watering from March to October. Once you’ve planted your laurel hedging plants, you need to make sure they get enough water to keep them alive and growing well.
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