Aphids are small sap sucking insects. Plant Griselinia away from frost pockets. Prevention. Why choose Griselinia littoralis for your landscape?. Root rot most commonly becomes a problem after trees have been water stressed. For more info on Buxus Blight click here. All the leave are either turning brown then black and falling off. Read More Last year, I started a new hedge (there may have been a blackthorn there in the past) in my front garden, about 70 plants in July and another 50 in October. Griselinia - diseased? Photo by wallygrom. Aphids. Frost pockets are usually areas of ground lower than or shadier than their surroundings, these receive lower temperatures and frost often lingers long enough to damage the spring leaves and flower buds. Premature brown leaves are an indication of a problem with your shrub. It is a relatively strong plant and can withstand a hard pruning if the needs arise. Really don't want to have to replace it all this year. I suggest you look at planting a laurel hedge in this shady area. Not surprisingly aphids are the most common pest you will encounter in your hedge, there are over 500 species in the UK. Similar symptoms occur on buxus or box, which is usually grown as a hedge or topiary, however tis is usually caused by a fungal disease generally known as Buxus Blight. Griselinia makes a great hedge in a seaside garden. _____ Gardening books. A Griselinia Hedge can be pruned in the summer months – July to September in the UK – and depending on your topiary tastes, you can use hand or machine shears to achieve your goals. As they feed they can spread diseases, weaken plants, and increase the risk of getting Sooty Mould. These shrubs can grow up to 8 m tall if not trimmed. Olearia macrodonta - New Zealand Holly Griselinia has light green leaves of oval shape. Popularly known as New Zealand broadleaf or New Zealand privet, Griselinia littoralis is a fantastic alternative to common hedging varieties. Well you would not be the only one to have a dying griselinia hedge in Auckland due to the dry weather. Is it totally dead or can it be saved. Problem solving. How to Cure Brown Leaf Disease in Shrubs. Your plant may suffer from a fungal or bacterial pathogen. This evergreen hedge is very fast growing. › Problem solving. How to cut and prune a young Griselinia hedge using stihl long reach hedge cutters. Evening all, just looking some advice on whether to give one plant more time? My Griselinia hedging seems to have taking a beating during the latest cold snap. PESTS : 1. I live near Stonefields and alot of the griselinia hedges in that suburb (2-4 years old) are dying, plus a little gem magnolia hedge - dead. › Griselinia Hedging ... so we've put together a guide on the most common problems gardeners face from pests and diseases in the UK. Plant 2 ft apart for a solid hedge.