The Esopus Spitzenburg is thought to have been one of Thomas Jefferson's favorite apples. It is also a tart apple that blooms in flowering group 4 and grows well in zones 4 though 6. A sweet apple that blooms in flowering group 4 is the Gala apple. Gala apple trees are consistent producers in zones 5 and above.
The Croatian interior which includes Zagreb and Slavonia is separated from the coast by the Dinaric mountains and has a completely different climate. In Zagreb, the average annual temperature is 12Â°C (53Â°F) with average highs of 2Â°C (35Â°F) in January and 27Â°C (80Â°F) in July. The central mountain regions of Lika and Krbava have warm summers and cold winters, with a milder climate in the valleys.
Key weather averages for Croatia in April. 1  16. 16Â°C max day temperature. 2  7. 7 hours of sunshine per day. 3  13. 13 days with some rainfall. 4  8. 8Â°C min night temperature. 5  13. 13 hours of daylight per day. 6  0. No heat & humidity. 7  82. 82 mm of monthly rainfall. 8  5. 5 (Moderate) UV index. 9  14. 14Â°C sea temperature.