Can I Spray Single Super Phosphate & Potash on Lemon Tree?

Question

Can I spray single super phosphate & potash to lemon tree? If yes, please tell me the dose. The tree is 4 years old and in good health.

Answer 1

''A high nitrogen fertilizer, such as one designed for citrus trees, is best fed monthly between April and September. Withhold fertilizer during autumn and winter months. Yellowing leaves indicate the need for either water or fertilizer.'' (https://www.gardeningknowhow.com/edible/fruits/lemons/growing-meyer-lemons.htm)

Yes, you can spray with single super phosphate & potash. You would need to add nitrogen. You would have to follow package directions.