Conclusions

• Whether a plant responds better to ‘rapid’ or slow thawing may be dependant on individual species

• Tiarella – less hardy genus– better regrowth after rapid thawing

• Slow thaw – freezing duration too prolonged

• T. ‘Brandywine’ – significance at –5, -8, -11C

• T. ‘Martha O.’ – significance at –8, -11, -14C

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