TheUSDA Hardiness Zonethat you see list with a works should be considered a good word and not an absolute . Hardiness zones measure the median annual minimum temperature , but they do not report forsoil moisture , the continuance of stale weather condition , and other factors that determine plant survival . Intrepid gardeners love to flap the dice and push their zones and their fortune . Here are a few trick that might help you get away with it .
1. Mulch heavily
A herbaceous plant just want its roots and jacket crown protect , and a heavyset stratum of mulch can often provide one-half to a full geographical zone extra of hardiness . Just remember to rake back that heavy mulch level in outflow .
2. Plant against a wall
The British have a terminal figure that is going out of way , but I find it useful . If a plant is list in references as a “ wall industrial plant , ” it is not totally hardy , but the added wind protection and effulgent high temperature provided by a wall will aid it come through .
3. Take advantage of a slope
In recent age I ’ve been stunned at the success I ’ve had simply implant on a side . Marginally sturdy plants appreciate the heavy stale melodic line moving down and aside , a thaumaturgy yield growers have used for multiplication when planting their orchards .
4. Wrap it up
If all else fails , the genuine denier will wrap up industrial plant in gunny or charge card , isolate them with foam or fallen leaves , and even wrap them in string lights to keep them lovesome .
Mark Weathington is the director of the JC Raulston Arboretum in Raleigh , North Carolina .
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