black bumps on tree leaves
Scale are sap sucking insects that can be white brown black or even pink in colour. The dragon tree Dracaena marginata is a popular houseplant that is easy to grow in most indoor environmentsLooking like a small palm tree the dragon plant has a narrow stem with tufts of thin arching sword-shaped leaves.
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Scale quickly multiples in dry seasons.
. When crushed the leaves and all plant parts give off a strong offensive odor. Citrus scale pests can spread rapidly so. At the base of each leaflet are one to two protruding bumps called glandular teeth.
They look like patches or raised bumps that appear on stems or the underside of leaves. When adult scale is attached to the tree it often appears as crusty or waxy bumps on the tree often it is mistaken for part of the trees own growth but it is actually an insect. The scale sucks sap from the tree and causes the leaves to turn yellow and drop.
The leaves give the Dracaena marginata plant a distinct spiky appearance that makes the plant an eye-catching indoor specimen tree. Scale is most common on the new tender woody growth. The twigs of tree-of-heaven are alternate on the tree stout greenish to brown in color and lack a terminal bud.
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