Ramorum disease has been found in most regions of the UK, but it is more often reported in wetter, western regions. It is quite quickly lightening in colour and the bottom leaves are turning brown. The Portuguese laurel is also a better looking plant, with smaller, neatly serrated, softer green leaves that resemble bay (Laurus nobilis). Prunus Lusitanica or Portuguese Laurel is an attractive subtle alternative to other evergreen hedging plants – darker leaves are visually less intrusive tan say common laurel but just as hardy and practical. Prunus lusitanica, commonly known as Portugal laurel, is a densely branched shrub that grows up to 20 feet tall or a multi-trunked tree growing up to 30 feet tall. 3. Portuguese laurel (Prunus lusitanica) falls neatly into this category. Add another photo. Keeping an eye on your laurel shrubs for signs of infection and illness will help you maintain a healthy, happy shrub for years to come. They were planted no more than 3 years ago. The coloured dots represent the April-to-March years in which infection was confirmed or presumed. I have checked and the hedge is not Skimmia, but Portugal Laurel. Can you advise me? 1. Another reason for your leaves turning yellow is hunger and your Portuguese Laurel Hedge may need a granule or liquid feed with high nitrogen or some poultry manure pellets. Not sure if this can be seen but here is the offending bush. The larch situation report summarises the latest disease situation on larch trees across the UK. the plants form a hedge, the ones that are dying are flanked by healthy ones. Laurel hedge plants can suffer from frost damage in Autumn, winter or Spring. Record the plants in your garden, share your photos, and make like-minded friends. For spring and summer planting, water Portuguese Laurel trees well for the first few months. Symptoms Small brown patches will appear on the leaves from midsummer, the centre of these falls out to leave a small round hole, giving it … Jim Crowder from Memphis Botanic Garden says if sections of the Otto Luyken Laurel plant are dying out it is probably Phytophthora root rot. Prunus Lusitanica Portuguese Laurel. I have attached some images. Thanks. Increase watering if there are extended periods of hot or dry weather. It's not a plant I'm familiar with, so just my best guess. This will result in yellow leaves, leaf wilt or excessive drooping. Its getting sicker by the day. Most people will lose the plant if they fail to keep up with Prunus Lusitanica requirements as it is trying … Portuguese Laurel is fairly demanding when it comes to optimal soil moisture, and this will be particularly apparent as the weather gets warmer. Other common names Portugal laurel cherry bay Portuguese laurel cherry see more; Family Rosaceae Genus Prunus can be deciduous or evergreen trees or shrubs with showy flowers in spring, and often good autumn foliage colour. The hedge is in the country beside fields which have been planted in barley. It works its anonymous way into most gardens sooner or later. Summer is the best time to tackle this problem, as the warm dry conditions discourage the spread of silver leaf fungal spores. some of my portuguese laurels are dying, it only seems to be the females. Cultivation. Hi. Damage in the Autumn is often caused by sharp early frosts and is limited to soft late season growth which turns black and shrivelled. But it does not tolerate soggy soil. It is on the end of the row and they are all getting watered well. It bears nice blooms in summer and colored berries in fall and winter. I am not a gardener, but I thought that the plants which carried flowers were female. What could be the cause? Common name Powdery mildew, leaf spot fungi and bacterial shothole. Determining the reason for brown mountain laurel leaves can be challenging and involves careful detective work. I will be in contact at the beginning of the week. Name – Prunus lusitanica Family – Rosaceae Type – shrub, bay. The next major task is to strike the right balance with watering. Around april to may we put in a row of laurel hedges and in 4-5 months all are doing well except one. A Mediterranean native, Portuguese laurel handles moist to dry soil, clay to sand and drought. I've just had some monsters pruned as they had grown too big for me. They were planted no more than 3 years ago. … Then he gets out the pruning saw and demonstrates how to remove all the affected growth in order to try and save the tree. Trimming the top (and sides if necessary) is essential for the successful establishment of the cultivar. some of my portuguese laurels are dying, it only seems to be the females. Powdery mildew and Shot-hole disease are the two most common diseases of laurel … Certainly a close up view of the back of the leaves with the brown marks showing would be useful. Scientific name Podosphaera pannosa, Podosphaera tridactyla, Stigmina carpophila, Eupropolella britannica and Pseudomonas syringae. They can be used as shrubs or grown taller as small trees. Thanks. Grows on You is a community for gardeners. Are they a hedge? It is often referred to by its Latin name Prunus lusitanica Angustifolia and showcases luscious dark green, pointed, glossy leaves on striking deep pink or maroon stems. Commonly known as the narrow leaf Portuguese Laurel or Portugal Laurel and also as Prunus Lusitanica Myrtifolia.The variety of Laurel is very similar to the Prunus Lusitanica but it has slightly narrower longer slimmer leaves which are a darker green and has a more compact growth habit. 2. When planting in autumn, you may only need to water a little. the plants form a hedge, the ones that are dying are flanked by healthy ones. Prunus Lusitanica Angustifolia is a wide bushy evergreen shrub. Root rot – Laurel roots can become waterlogged during periods of intense or persistent rain which creates a form of root rot or fungal disease. Diseases of Laurel. Foliage – evergreen Flowering – spring Fruits – fall (inedible). The only other point which you can see from the picture is that they are all in line with a fence except this one. All types of laurel hedge need to be pruned once a year. Occasionally Laurel suffer from diseases that can spoil the look of the leaves but rarely threaten the life of the plant. There is no sign of bugs on it. Probably early on, but the signs took a while to manifest themselves. Please Can someone tell the best time to lift delphiniums... », Add a photo It is quite quickly lightening in colour and the bottom leaves are turning brown. The 'sick' side is not near a road or anything like that, infact the 'sick side' has some laurel that are as healthy as the good side (the sick ones are kind of grouped, but split up by semi-good growing laurel). 7. And are the affected plants all growing together, or spaced out with healthy ones in between. It is best done in late spring when your Laurel is starting to grow again as any brown branches will soon be covered in new shoots if you do it at this time of year. The UK outbreak map shows where ramorum disease has been confirmed or presumed in larch trees. Add another photo I've tried to attach a picture. How long have you had them? The 'sick' laurel are all on one side, some grouped but some separated by semi-good laurel, and the soil is the same all the way along that one side. Portugal laurel is a beautiful evergreen shrub with deep dark green leaves.. Key Portugal laurel facts. Need more info on the problem with the shrubs - photographs would be useful, but otherwise, what's happening? Thanks Irene. Brown Spots on Prunus Lusitanica. Any ideas as to what is happening please? Um, I think we'd better establish precisely what plant you mean - Portugal Laurel is the common name for Prunus lusitanica, and these plants don't have male and female varieties. Welcome to Boards.ie; here are some tips and tricks to help you get started. Bamboo is correct, the flowers are both male /female. What could be the cause? One of the best ways of avoiding root rot is to avoid overwatering and standing water by ensuring excess water is able to drain away. Older Laurel hedges can sometimes run out of steam a little, perhaps making very little annual growth and looking rather pale. I didn't notice the snail. Once planted, keep the area free of competing weeds and grass for the first couple of growing seasons. In the top one of the pictures, I can see a snail on the leaves, so that would account for some damage, and on the back of one of the holey leaves, I can see what look like raised or sunken brown things, not sure what they are, not close enough to tell. Yes, in general, you can cut Cherry Laurel, Portugal Laurel and Bay Laurel right back to the stump and it will re-shoot. Assuming there is no obvious underlying cause for this (like a new concrete driveway or extension encroaching on the root run) then we recommend a specialist fertiliser to encourage root and top growth together with magnesium to improve leaf colour. The other plants might be doing better because they're sheltered by the fencing. Prunus laurocerasus (Cherry laurel) varieties and Prunus lusitanica (Portuguese laurel) are more resistant than any other Prunus. I agree with the others - they look like they need a good soaking and a decent layer of mulch to give the roots a better chance of establishing. The sweet chestnut situation report summarises the situation on sweet chestnu… Log in or register to join the conversation. I could post some close-up images, if that would help indentify the problem. Grow in moderately fertile, moist but well-drained soil in full sun or partial shade. Suggested uses. Around april to may we put in a row of laurel hedges and in 4-5 months all are doing well except one. Could passing walked dogs be an influence on it? It is on the end of the row and they are all getting watered well. Cottage/Informal, Coastal, City, Beds and borders, Drought Tolerant, Hedging/Screens, Low Maintenance. I'd replace it and that can be done now, cheaply, with good sized root-balled plants. Mountain laurel usually remains green year round, so brown leaves on mountain laurels can be a sign of trouble. United Kingdom. Mountain laurel is a broad-leaved evergreen shrub, native to the United States where it is much beloved. Bamboo, Monty Don explains how to identify silver leaf disease in a Portuguese laurel tree, pointing out the tell-tale symptoms. The Portuguese laurel is also a better looking plant, with smaller, neatly serrated, softer green leaves that resemble bay (Laurus nobilis). Once your Laurel hedge is established we would recommend an annual feed early in the spring with a balanced fertiliser such as ‘Growmore’, this is very beneficial to a Laurel hedge if applied at the same time as a mulch (a layer moisture retaining material like bark chippings, lawn mowings or garden compost). This is odd because it is surprisingly expensive to buy. Thanks for your replies, the soil particularly in this area was really sandy, so i think Ill just replace it. Hi. Do you mean Skimmia by any chance? Plants affected Cherry laurel ( Prunus laurocerasus ); most of the diseases also on Portuguese laurel ( Prunus lusitanica) Main causes Fungi and bacterium. I'd have said drought. Jen. Height – 6½ to 20 feet (2 to 6 meters) Exposure – full sun. There are lots of small holes everywhere too, so perhaps you have had a sawfly infestation, coupled possibly with a fungal infection, but hard to say for sure from a distance. Laurel are very easy to grow and, generally, disease-free. If you just want to trim the sides back hard then this will also re-shoot. Prunus lusitanica 'Myrtifolia' (Portugal laurel 'Myrtifolia') will reach a height of 6m and a spread of 3m after 20-50 years. I have attached some images. While laurel shrubs grow vigorously and tend to choke out most problematic plant invaders that might interfere with their health, they can be susceptible to infections and diseases. The Portuguese laurel is also a better looking plant, with smaller, neatly serrated, softer green leaves that resemble bay (Laurus nobilis). 1 Sep, 2011. Laurel is pretty bullet proof under the right conditions - it pops up everywhere in my clay soil and is glossy and healthy. Speak soon, I have added images of some of my laurels. Looking at your photo Jen it could be that the one on the end is drying out due to wind damage. Away for the weekend. Thanks. Laurels are a popular plant for screens, privacy hedges and general landscaping. Portuguese Laurel is a favourable hedge plant to have in your garden or outdoor area. Portuguese laurel dying.