Description: Sweet Olive, a large evergreen shrub or small tree, is capable of reaching 20 to 25 feet in height and width but is most often seen at 10 to 12 feet high with an 8-foot-spread. It’s very not normal for olive leaf spot to appear during low temperatures or periods of lack of rain. Armored species include Oleander Scale, Red Scale and Olive Scale. The infection then spreads to the other parts of the tree (root system), and after a few years it may result in the death of the tree. Soft scale species include The Black Olive Scale as well as Soft Brown Scale. And all extra virgin olive oil producers ‘tremble’ at its possible presence. Temperature fluctuation and changes in the soil allow occasional blossoming of the sweet olive tree during the winter months. Masía el Altet and Joël Robuchon in Japan, Articles about the best extra virgin olive oil, All of the details about the 2020 harvest at Masía El Altet, Delicious recipe for baked apples full of goodness, How Masía El Altet EVOO manages to achieve a high number of polyphenols, Warm vegan salad with cauliflower, lentils and caramelized onion. For generations, the Sweet Olive or Tea Olive has been a staple for Southern gardeners. I have a small live tree in a large pot on my garden in the South West of England, and have noticed these spots on the leaves for the last few summers. How can you know? The fungus Gloeosportum olivarum Alm, damages olive orchards in the moisture territories and especially the coastal ones. Pests: Free of serious pests and diseases, although scales and nematodes can be a problem. You mustn’t forget that copper is after all a metal and it could even damage the roots  which are responsible for transporting nutrients to the  tree itself. The pathogenics of the fungus, get into the trees from the wounds of the pruning, and develop easier, where the rain water sits. We often also wake up to morning dew. It is very thypical in our area. In the newer trees the first symptoms appear in the spring, on the top of the one year old branches. With proper care, Sweet Olive will thrive in any part of the country and should be planted in a container and moved indoors for winter in cold climates. The olives get attacked when they are ripening and they rotten. Honey fungus may cause plant death. There is a fungus on my sweet olive, and leaves on our crape myrtle are turning orange. An excess can be damaging. The soot is a fungus, coming from the Fumago vagans and the Antenaria elaeophila. These funguses cover the leaves with black plaster, they don’t parasite on the masts of the olive tree and they grow on the secretions of the insects, preventing the natural function of the tree. In order to be able to fight against this fungus,  it’s first necessary to identify it. Why these seasons? If the loss is considerable there can be no doubt that the tree will end up being seriously damaged. It’s more than obvious that we have to be constantly alert to  its possible appearance and tackle  it as quickly as possible. What makes olive leaf spot appear? Please let me know how to treat the plants in these photos. I deliberately tried to keep the bushes quite dense to form a screen but given what you say about bad pruning… Read more », Hi Scott, what I suppose your olive trees has what we call in Spain “repilo” I recommend you to use a treatment against this. Join now. It’s a disease as common as it is dangerous. The eggs hatch into tiny yellow crawlers with legs. This takes place when huge masses of humidity-laden air  passes over cold ground and  cools down. Thank you so much for your help. Sweet Olive bursts into bloom from spring to fall with clusters of petite white flowers. The flowers and the fruits also fall. But the same can happen as in the previous case. This bitter substance is an element of the compound that is used by the olive tree to ensure that the plant is vigorous and resistant to harsh weather conditions, bacterial damage and insect attack. Best, Jorge, Hi, your articles was very helpful. Highly adaptable, it produces abundantly in hot dry climates. It’s a disease as common as it is dangerous. Standing at a height of 25 feet tall and almost as wide, this Specimen shrub creates an aromatic, sweet-smelling cluster of white blooms in the early Fall every year. Tom Mueller´s report for the Wine Spectator magazine. Talking about one of my favorite plants last time, I described how a sweet olive (Osmanthus fragrans) succumbed to oak root fungus, a disease that may … The algae, in return, can create food from the energy of the sun, which feeds the fungus. Scale insect is sometimes a problem, as is the disease olive scab which causes ring-spot symptoms on the foliage. Sweet olive trees do not require extensive pruning, but look best when trimmed regularly to control their shape. - Wanda B.
, The soot is a fungus, coming from the Fumago vagans and the Antenaria elaeophila. Pruning yearly helps even out production. The, The Enviromental Enemies Of The Olive Tree, Testing The Authenticity Of Extra Virgin Olive Oil Myth, Brain Functioning And Olive Oil continues. For that reason, this fungus is nomally found at Masía El Altet. If after this has happened,  the wind is prevented from circulating properly inside the treetop, the appearance of olive leaf spot is speeded up because it spreads quickly from leaf to leaf since there is no distance between them. The fungus Polyporus spp., Polystictus spp., Poria spp., Stereum spp., and Irpex spp., attacks the trunk and branches. The rhizines (similar to roots) allow them to attach to the but do not go deep enough to harm the tree in any way. The fungus attacks the olive fruit, young branches and leaves. On some occasions, these marks are surrounded by a yellow-coloured ring. Lichens on bark of sweet olive tree. Obviously,  the tree’s productivity is also going to be affected and in some cases, the harvest could be zero. The flowers and the fruits also fall. Characteristics. People use the oil from the fruit and seeds, water extracts of the fruit, and the leaves to make medicine. The sweet olive tree, of the Osmanthus fragrans species, is indigenous to China, Japan and the Himalayas. The tree, however, is not directly affected by this fungus. The main diseases that usually affect olive trees are:-Peacock Spots: its technical name is Cycloconium oleaginym Cas, since this disease is caused by the fungus Cycloconium oleaginum. Where this problem is concerned, the Ministry of Agriculture, Fishing and Food (MAPA) advises the following treatments: Click onto this link and you’ll find a more detailed description of all these treatments for fighting against this disease. I’m not sure what the buds will turn into, but they are definitely new growth and are covering nearly every leaf-stem intersection.