The mild winter could lead to smaller fruit crops in the autumn, potentially pushing up prices, the Royal Horticultural Society has warned.
The RHS said most hardy fruit plants need a period of cold weather during winter to encourage flowering. Evidence from previous years suggests that without a "chilling period" crops are reduced.
Blackcurrants, cherries and some types of apple have a particular need for a cold period.
A mild winter could lead to rising prices of fruit next summer as the horticulture industry sees lower yields, the RHS said.