Frost Cracks

frost cracks

[′frȯst ‚kraks]
(botany)
Cracks in wood that have split outward from ray shakes.

Frost Cracks

 

cracks in the bark (and sometimes also wood) of the trunk and main branches of old trees with roughened, inelastic bark. They form during extended periods of very low temperatures when the outer layers of the bark and wood cool more rapidly and strongly than the inner layers. In the spring and summer callus (new tissue) forms along the edges of the crack and usually seals it. Frost cracks may lead to the appearance of hollows. Spraying the trunks and main branches with a lime solution (whitewashing) in the autumn helps to some extent in preventing the formation of frost cracks.

References in periodicals archive ?
Inspect recently planted trees for frost cracks or sunscald.
Called "frost cracks,'' the damage usually appears on the southwest face of young trees.
Specifically, this study (1) examines the critical hydro-logic and landscape factors that are important in sustaining ponds through variable short-term fluctuating weather conditions and possibly long-term climatic shifts; (2) examines the relative importance of lateral water sources (e.g., meltwater from late-lying snowbeds, streams, and other linear waterways, such as frost cracks) in the maintenance and the survival of these polar desert ponds; and (3) assesses the role played by climate (radiation, temperature, precipitation), as opposed to the landscape setting, in the hydrology and sustainability of these polar desert ponds.
Frost cracks are common in the coastal area, often running from the hill-slope into the coastal zone and ranging in size from minor undulations to deep depressions.
the frost cracks as the house shifts and your voice.
The best examples of walnuts growing on the Prairies are in the Morden and Portage la Prairie areas; yet these trees have evidence of frost cracks and scars.
But God's become forgetful, we've all noticed the change; frost cracks the folding husks binds the soil where we planted marigolds; my daughter paints in crimson streaks alef, akimbo, unimaged: it says nothing because the sound it says is invisible.
Frost cracks are splits in the radial-longitudinal plane of a stem caused by "frost shrinkage," which occurs when the outer layer of a tree is colder and contracts faster than the core (Kubler, 1983, 1987).
A: The crack in the bark is likely a "frost crack." These cracks form, especially in young trees with thin bark, when the sun warms the sap while the tree is still mostly frozen.