Although frangipanis are pretty hardy, there are some kado ulang tahun unik, kado unik and diseases which can affect them, predominantly fungus, scale, frangipani rust and stem rot.
Leaves suffering from fungus or mold could be with a copper centered fungicide and white oil solution. Keeping plants well nourished helps prevent fungal infections. Potash is specially good for improving disease level of resistance in frangipanis.
Leaves affected by hemispherical scale have dark to light brownish bumps that are glossy, even and hemispherical. Leaves may have got a black sooty coating.
Scale can be treated by spraying with white oil in spring to early summer. If you like organic solutions, try encouraging natural predators to your garden, such as for example ladybugs, the scale consuming caterpillar, and parasitic wasps. Many vegetation attract including daisies, zinnias, and zucchini.
There exists a new disease attacking frangipanis in Australia called frangipani rust. It is most noticeable in late summertime and early autumn. An orange to yellow powdery substance (actually pustules) appears on the underside of leaves. They rupture and spread spores which pass the disease to other plants close by. The higher sides of the leaves are brownish and discoloured. Severe infections could cause the leaves to drop prematurely and will lead to the death of small plant life, however larger trees appear to suffer no side effects (apart from leaf drop).
To control frangipani rust try using a fungicide (such as Mancozeb) in the warmer months to slow the advancement of the disease. Disposing of all fallen leaves in winter and spraying the tree and the region under the tree with a fungicide may slower the reappearance of frangipani corrosion next season.
The good thing is that lately some frangipani trees have built up a resistance to rust, so it may be on it's way to avoid it.
Stem Rot & Black Tip Dieback
As frangipanis reduce their leaves over wintertime, soft, withered stems may become visible. It's a disorder called stem rot' and it's quite common in trees which have been stressed by frosts, drought, lack of sunlight or just the usual age.
The ultimate way to keep it under control is to merely prune off any diseased growth, but when you do, it is critical to make sure you cut it right back to good, healthy tissue.
Dying tip growth is commonly referred to as black tip dieback. Some newer deciduous cultivars and evergreen frangipanis are particularly prone to the disease.
Commercial frangipani growers suggest the issue is usually worse in areas where fruit-spotting bug and beetle activity is certainly high. This is because any insect attack on the tip of the plant predisposes it to a secondary dieback infection.
Affected plants typically reshoot beneath the damaged part of stem. If plants appear unsightly or you are worried that the rot is definitely advancing down the stem, use sharp pruners to cut back to clean tissue. Make sure to use hot water or household disinfectant to clean pruners between cuts in order to minimise potential disease transfer.
Badly affected plants may reap the benefits of an application of fungicide to limit the disease's spread.