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A leaf (pl.: leaves) is a principal appendage of the stem of a vascular plant, [1] usually borne laterally above ground and specialized for photosynthesis.Leaves are collectively called foliage, as in "autumn foliage", [2] [3] while the leaves, stem, flower, and fruit collectively form the shoot system. [4]
Prickles on a blackberry branch. In plant morphology, thorns, spines, and prickles, and in general spinose structures (sometimes called spinose teeth or spinose apical processes), are hard, rigid extensions or modifications of leaves, roots, stems, or buds with sharp, stiff ends, and generally serve the same function: physically defending plants against herbivory.
Thick piles of leaves can do more harm than good for most lawns, as they can kill the grass underneath. ... Leaves can also serve as safe harbors for bugs and insects, including lightning bugs, so ...
The epidermis of most leaves shows dorsoventral anatomy: the upper (adaxial) and lower (abaxial) surfaces have somewhat different construction and may serve different functions. Woody stems and some other stem structures such as potato tubers produce a secondary covering called the periderm that replaces the epidermis as the protective covering.
The “leave your leaves” movement is all about putting those rakes and blowers away and letting nature do what nature does. Leaves are rich in nutrients like potassium, nitrogen and phosphorus ...
Again, shredded leaves work best when tilled into garden beds, but you can use small amounts of whole leaves as well, if necessary. Till into beds in the fall, or spread over surfaces and work ...
In leaves, the vascular bundles are located among the spongy mesophyll. The xylem is oriented toward the adaxial surface of the leaf (usually the upper side), and phloem is oriented toward the abaxial surface of the leaf.
Leaves can be returned to our yards instead of the landfill to build better soil and help protect critical habitats for many beneficial creatures. Skip to main content. 24/7 Help. For premium ...