Compléter Darkness in the northenVersion en ligne The increasing darkness in the Northern Hemisphere this me of year "indicates to the plant that fall is coming on. So it starts recouping materials from the leaves before they drop off." Evergreens protect their needle‐like foliage from freezing with waxy coatings and natural "antifreezes." But broadleaf plants, like sugar maples, birches, and sumacs, have no such protections. As a result, they shed their leaves. But before they do, the plants first try to salvage important nutrients such as nitrogen and phosphorus. par Mohsin Khan 1 fall waxy salvage leaves The increasing darkness in the Northern Hemisphere this me of year " indicates to the plant that is coming on . So it starts recouping materials from the before they drop o ? . " Evergreens protect their needle ? like foliage from freezing with coatings and natural " antifreezes . " But broadleaf plants , like sugar maples , birches , and sumacs , have no such protections . As a result , they shed their leaves . But before they do , the plants ? rst try to important nutrients such as nitrogen and phosphorus .
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