1, oval: oval in shape, widest in the middle, and round at the tip and base, such as the leaves of camphor tree, rubber tree, osmanthus fragrans, tea tree, black jujube and primrose.
2, heart-shaped: shaped like a heart, the base is wide and round and slightly concave, and the apex is gradually pointed, such as sweet potato, morning glory and bauhinia. If the heart is inverted, it is called inverted heart, such as the leaflets of Oxalis.
3. Palm shape: The leaves are divided into three parts or five parts, forming a deep notch, which is like a palm, such as the leaves of cotton, castor, grape, maple and phoenix tree.
4, fan: shaped like an unfolded folding fan, the top is wide and round, tapering to the base, such as ginkgo leaves.
5, diamond: the leaves are equilateral Syrian square, such as the leaves of water chestnut and tallow.
6. Needle-shaped: also known as spear-shaped, the leaf base is wide, the apex is tapering, and the length is about 3-4 times of the width, such as the leaves of peaches, willows and bamboos. If it is needle-shaped, it is called inverted needle-shaped, such as the leaves of tillers.
7, oval: shaped like a chicken egg, the lower part is round and wide, and the upper part is slightly narrow, such as the leaves of mulberry and sunflower. If the egg is inverted, it is called inverted egg, such as the leaflets of magnolia and peanut.
8, round: shaped like a disk, the length and width are nearly equal, such as the leaves of the trollius chinensis.
9. Scale-shaped: Scale-shaped, such as the leaves of Platycladus orientalis.
10, spoon-shaped: spoon-shaped, with a round apex and tapering towards the base, such as cabbage and plantain leaves.
1 1, triangle: the base is wide and flat, and the three sides are nearly equal, such as buckwheat leaves.
12, needle shape: the leaves are slender as needles, such as those of Pinus tabulaeformis, Pinus massoniana, Pinus bungeana and cactus.
Can leaves be used as fertilizer?
Yes, but it must be fully fermented and decomposed leaves, especially potted plants, plants with small flowerpots and small plants, which must be fully fermented and decomposed before they can be used, otherwise it is easy to burn yellow leaves.