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What does a severe freeze mean for your landscape?
Plants that are most susceptible to freeze damage are those on the fringe of hardiness; for example, a plant that is rated for USDA Zone 7 would be considered on the fringe in central Oklahoma. Plants in pots (as opposed to those planted in ground), plants with existing damage from drought, drainage issues, insects or diseases, and newly planted material are more at risk from a freeze as well.
Plants that are fully winter hardy in our zone should be fine during a typical hard freeze. You may notice signs of winter damage, especially on new growth and blooms that have already opened, but winter hardy plants should recover.
Follow the tips below to protect plants on the fringe for your hardiness zone as well as plants in pots, plants trying to recover from previous damage, and anything newly planted:
*PLEASE NOTE: These are basic tips for normal hard freezes within the average lows in our USDA Plant Hardiness Zone. In central Oklahoma, the USDA Hardiness Zone is 7a (0°F to 5°F). If you aren’t sure of the USDA hardiness zone in your area, you can check here: USDA Plant Hardiness Zone Map.