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I have just planted a Metasequoia glyptostroboides in a fairly water-logged field. Unfortunately, after heavy rains a puddle of water tends to...
Can anyone tell me what causes girdle scars on twigs? Someone told me they're the remnants of the previous year's apical bud and you can therefore...
I understand why plants have green leaves but can anyone tell me why plants also have red, orange and yellow pigments in their leaves? What...