If the soil is too wet, let the soil dry out slightly before watering again.įor more information, see the following Colorado State University Extension fact sheet(s). Winter burn on boxwood (Buxus) Winter injury to newly planted evergreens and to tender shrubs like big leaf hydrangeas (Hydrangea macrophylla) can be prevented.
Deep infrequent watering is more beneficial for plant growth than frequent, light watering. To manage a leaf scorch problem, check soil moisture by taking a sample about three to six inches deep just beyond the plant.
Roots, which may not function properly in these conditions, cannot replace water fast enough to keep up with what is lost through transpiration. Common reasons for dehydration in your plant is when there has been inadequate watering or exposure to sunlight or reflected light for an extended time. The water on the leaves has evaporated and the roots cannot keep up with the demand for more water. Soils in urban areas can be packed and not drain properly, causing low oxygen content. The first sign of leaf scorch in hydrangeas is that the plant appears to be wilting. A combination of these factors creates an imbalance between water uptake and water loss. Water uptake and loss can be affected by many factors including hot, dry, windy conditions, lack of soil moisture or lack of soil oxygen. As the root system absorbs water, the plant balances taking in new water by losing some water through openings in leaves and stems. A plant can scorch when something interferes with the tree’s complex process of water uptake and water loss.Ī plant’s root system serves many purposes one of the most important is water uptake.
When a plant has been scorched, the veins in its leaves remain green and the tissue between the veins turns brown and brittle. As the growing season progresses into late summer, leaves on many plants begin to exhibit tip burn or more significant scorch.
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