General information about acacia leaves
The acacia rarely sheds its leaves. The deciduous tree actually belongs to the evergreen family. The leaves are alternating and pinnate, but externally vary from species to species. A few examples of acacia varieties are listed below.
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Different types, different leaf shapes
- the water acacia: green, narrow leaves with a smooth edge
- the silver acacia: greyish-green leaves, pinnate unpaired, numerous single leaves with a length of up to 18 cm
- the blackwood acacia: short-stalked, green leaves, elongated, egg-shaped
- the gray Muga acacia: alternate leaves green, imparipinnate, smooth edge
- the Dietrich acacia: dull, blue-green colored leaves in an elongated shape, smooth edge, upright
- the Quorn acacia: smooth leaf margin, oblong shape, green
Acacia leaves change over time
Young acacias have a normal petiole. With increasing growth it flattens out more and more. This knowledge is extremely useful in determining the age of your acacia. Incidentally, photosynthesis takes place on the leaf stalk of the acacia.
Acacia leaves have their own defense mechanism
Acacias not only have sharp thorns to protect against predators, but also protect themselves with the help of their leaves. If the foliage is eaten by an animal, the acacia produces ethene, an intense fragrance that warns the surrounding deciduous trees. These then produce toxic tannins, so-called tannins. These have a toxic effect on the digestion of the pests, so that they will no longer visit an acacia in the future.