Origin: eastern United States platani, that is lethal. London plane tree is attacked by a number of pests. The plant rarely suffers damage from wind and ice storms. Why do we need this? In California, canker stain of Platanus acerifolia, caused by Ceratocystis fimbriata f. platani, appears to be confined to ornamental plantings and street trees in Modesto. You'll want to avoid sidewalks, powerlines and other tall trees. The living cells of the wood in the phloem, cambium and sapwood are invaded quickly soon after a fresh wound exposes those cells. Symptoms include round-to-irregular sunken, swollen, flattened, cracked, discoloured, or dead areas on the stems (canes), twigs, limbs, or trunk. But if the tree is planted in a fertile area with room to spread, it likely will not require much fertilizer. Three species in the Platanus genus are widely used as shade trees: P. occidentalis (sycamore, native to eastern US), P. racemosa (California sycamore, native to CA), and P. x acerifolia (a hybrid known as London plane). Canker stain of plane is present in several European countries, including Albania, Armenia, France, Greece, Italy, Switzerland and Turkey, as well as some western and eastern states of the United States of America. Small flowers appear in clusters in the early spring, gradually ripening into fruit balls that turn brown in the fall. Test soil samples to know for sure. Large trees may take several years to be killed but pole-sized trees may die within 2 years. Growing the London Plane Tree Can be a messy tree since drops a lot of leaves, twigs and fruit. Although sap-feeding insects can carry the fungus from tree to tree naturally, the most severe outbreaks are usually traced to pruning and other work on the trees. It prefers consistently moist soil, but it does have some drought tolerance as well. Sycamore, London plane tree—Platanus spp. As the disease progresses and cankers enlarge, water sprouts develop below the cankers. C. platani is an aggressive fungal pathogen that attacks plane trees ( Platanus spp.) Erysiphe platani on Platanus acerifolia (London planetree). The tree has medium to high water requirements, depending on how much heat and sun it gets. Cankers will often appear as a swelling surrounding a sunken lesion on the bark of trunks and branches. As mentioned, plane tree diseases tend to mirror those that afflict its close relative the Oriental plane and American sycamore tree. Use a properly labeled fungicide to help control the disease. Exclamation!™ London Planetree Platanus x acerifolia ‘Morton Circle’ Description & Overview A densely branched, upright pyramidal tree when young, the Exclamation!™ London Planetree develops its attractive exfoliating bark when young. The major foliage disease of sycamores is anthracnose, although several cultivars of London plane have resistance. Treatments consist of injecting trees with Arbotect 20-S at the rate of 80 fl. London Plane tree leaves in East Grinstead. Beneath the cankers, the wood is stained bluish black or reddish brown in a wedge-shape (when viewed in cross section) with the point of the wedge extending toward the center of the trunk or branch. London plane is attacked by several cankers, with canker stain a major problem in many areas. But its roots can damage buildings, sidewalks, and driveways, so choose your planting location wisely. Canker stain: London plane and sycamore trees have sparse foliage, small leaves, and elongated sunken cankers on the trunk and larger branches. Another pruning style used with this species is pleaching, in which the branches are braided together to form a living fence. Introducing "One Thing": A New Video Series. Tags: Sky British Leaves London Nature Great Sussex Plane West Tree England Natural Atmospheric Fruits South History Flowers and … Can be affected by canker stain, anthracnose, leafspots, aphids, plant bug, scales, and borers. Disease, pest, and problem resistance Infection is least likely to occur in December and January. From its adaptability to every landscape to its ornamental features, this tree has it all. But how much water does a plane tree need? plantani): It can be lethal to sycamore, but is much more important as a killing disease of London plane (Platanus acerifolia): Since it is spread almost entirely by man, through pruning, it is essentially a shade tree disease. One of the most common insect pests found on London planetrees is the sycamore lace bug. There are several reasons why a tree may produce foam and most are not good. By entering your email, you consent to receive communications from Penn State Extension. The oldest tree in London, coming in at 1,000 to 2,000 years old. Unfortunately, the love affair with this tree seems to be coming to an end due to problems with plane tree roots. The Mayor has committed to increasing tree canopy cover by 10 per cent by 2050. The most devastating of these diseases is called canker stain, which is caused by the fungus Ceratocystis platani. Anthracnose is the most serious disease of sycamore. ... Canker stain is very serious on London Planetree and can kill the tree, bacterial leaf scorch can devastate London Planetree and some fungi cause leaf spots. The tree can be amenable to a particularly hot summer, as long as its soil remains moist. Propagation is carried out either through cuttings or via seeds that break off and spread from its fruit balls. Key Characteristics: 1) Very small thorn extending directly from the end of some twigs: 2) Many clumps of black berries in late summer through winter. Since then, several cultivars have been developed. The trees were apparently noninfected at the time of the injection, but growing within 100 m of canker stain infected trees. The London planetree most often is used in urban landscapes where a very large tree is desired. It is very important to disinfest all tools and equipment immediately after use on a sycamore or London plane tree and before proceeding to another such tree. If that is the case, feed the tree in the early spring and fall with a tree fertilizer, following label instructions. London has more than 8 million trees, covering around 21 per cent of the capital’s land area. No chemicals effectively control this disease. Learn tips for creating your most beautiful (and bountiful) garden ever. Mulch around its base can help to retain soil moisture, but if there is an extended period with no rain the tree likely will need a good soaking with a hose. Common Name: London Planetree. Plane tree, any of the 10 species of the genus Platanus, the only genus of the family Platanaceae. 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