False Springs

As our climate continues to change, winters are becoming less predictable, and with that unpredictability comes an increased risk of “false springs.” False springs are a period of unexpectedly warmer temperatures in late winter or early spring, followed by sudden freezing events. During this period, days are longer with a higher light intensity. False springs can be particularly detrimental if the warm temperatures persist long enough to deceive crops into breaking winter dormancy.

Strawberry plants are especially at risk. Because the plants grow close to the soil and blossom earlier than many other crops, they are among the first to face spring frost and freeze damage. Frost protection is an important component of a successful strawberry planting, as frost and freeze events can cause significant injury to strawberry plants during open blossom, and to unopened buds if it is cold enough. A tell-tale sign of frost damage is a blossom with a black center.

We recommend beginning frost protection when temperatures are expected to drop below 32°F. There are several options available for frost protection, including overhead watering, row covers, and wind machines/return stack heaters. We find that overhead watering is the most dependable option.

Tip: Prevent winter injury by selecting appropriate sites, avoiding frost pockets, ensuring good air drainage, and planting winter-hardy varieties suited to your area.

This article is from our February Edition of Growing Together.