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Flowers are profuse , white , and 1 to _ inches in diameter , making the cultivar desirable as a landscape plant as well as for its fruit production . Start off in light shade ; move it to bright sun after a week or so . An average apple contains about 90 calories , and small amounts of vitamin A , vitamin C , thiamine , riboflavin , calcium , phosphorus , and potassium . The mulch will keep weeds and lawn grass from competing with the tree for water and nutrients , while also contributing organic matter to the soil and moderating soil temperatures in the root zone . Avoid areas surrounded by trees , which provide too much shade , compete with plants for water and nutrients , and interfere with air movement around plants . Lesion delimitation by the veins should make you suspicious of nematode , however , examination with a 10 hand lens is essential .