As Honeycrisp trees bloom in April, you will need to find other varieties that bloom and produce pollen at the same time. Possible pollination partners for your Honeycrisp apple trees include the Fuji, Gala, Golden Delicious, and McIntosh cultivars, among many others. Apple trees bloom for a relatively short amount of time (sometimes only for one week), so it is especially important to line up your cultivars’ bloom times. Since Honeycrisp apples are known for their superior fresh taste, you may try to plant another variety that is good for baking or long-term preservation.