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macrolepis differs from typical variety alleghaniensis in its larger fruiting catkin scales (8-13 mm long vs. 5-8 mm), with more elongated basal portion. Erdmann (1990) and Furlow (1993) regard the species as variable but without formally recognized varieties. Yellow birch is closely similar to cherry birch (Betula lenta). Cherry birch differs ...
Tree Tolerances. Plant Hardiness Zone: 3, 4, 5, 6 Shade Tolerance: Full Sun Part Shade pH Tolerance: Tolerant of acid to slightly alkaline soil (pH 5.0 to 7.5) Drought Tolerance: Low Flooding Tolerance: Moderate Salt Spray Tolerance: Unknown Soil Salt Tolerance: Unknown
Suitable for: light (sandy), medium (loamy) and heavy (clay) soils, prefers well-drained soil and can grow in heavy clay soil. Suitable pH: mildly acid, neutral and basic (mildly alkaline) soils. It can grow in semi-shade (light woodland) or no shade. It prefers moist soil.
Yellow birch (Betula alleghaniensis) is the most valuable of the native birches. It is easily recognized by the yellowish-bronze exfoliating bark for which it is named. The inner bark is aromatic and has a flavor of wintergreen. Other names are gray birch, silver birch, and swamp birch.
Early twentieth century logging practices that favored shade tolerant species resulted in a decrease in yellow birch . The effects of different harvesting systems and conditions on yellow birch regeneration have been studied and reviewed [ 70 , 92 , 109 ].
1 Ιαν 2007 · For most of the 347 plant species investigated, a consistent and robust shade tolerance index, ranging between 1 (very tolerant) and 9 (very intolerant), was found. Here we present revised shade indices for 71 tree and shrub species, 185 herbaceous species, and 91 bryophyte and lichen species.
Found in a range of successional stages of forests; although less shade-tolerant than other climax species, yellow birch seems to persist in old growth forests by taking advantage of gaps produced when other trees, particularly beech, die.
