Answer: Some plants are more frost tender than others and can be killed back by a late frost. Usually you'll see the damage overnight; things will look withered and dry. Frost can also retard growth so plants may not leaf out or flower right on schedule. The more likely cause of puny-looking plants is a little transplant shock. It's common and plants recover in a few weeks. The best thing you can do is keep your new plants watered regularly. Wait a few more weeks and then pinch or prune off anything that is damaged.
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