Fussier than many plants about climate, golden chain tree is a Goldilocks of the plant world — and not just in appearance. Just like Goldilocks in the fairy tale, it does not like it too cold, but it does not like it too hot, either. It requires a climate that is "just right," especially if you demand an optimal floral display. Nor is this the only drawback to the plant. Golden chain tree is relatively rare due to its fussiness and to various other problems to which it is susceptible. Still, its beauty makes it well worth trying if you have a climate conducive to growing it.

Leaf spot disease, which causes brown blotches on leaves, is a common problem for many trees and shrubs, including the golden chain. It is usually caused by fungal infections. The fungi thrive best in cool wet weather, and leaf spot disease is rarely a problem when the weather is warm and dry. Leaf spot disease is not a threat to a tree unless it has been recently transplanted. In this case, home gardeners should apply two to three applications of fungicide: first early in the spring when the leaves are just unfolding, and again after a week or two. If it is very rainy, a third spray may be necessary.

Golden chain trees that are over-watered or have a fungus in their soil may be at risk for root rot. The symptoms of this disease are yellow leaves and a wilted appearance. If a laburnum tree looks like this, check the roots--black, mushy roots are affected by root rot, while healthy roots are firm and pliable.

Twig blight is another common disease in golden chain trees. Like leaf spot, it causes discoloration of branches, especially newly developing branches, and is also caused by a fungus. To control this disease, prune infected twigs when the tree is dry to prevent further infection. Weekly applications of fixed copper (fungicide) should also be applied all season to protect from infection.

Hope this helps!