Hello all,
I'm pretty new to growing fig tree and have one quick question. Should I water spray my fig trees leaves, is it good to or will it cause harm. If I should then when is the best time and how often.

Thanks
Brian

Hi Bryan, 

Generally it's recommended to water the ground not the leaf - to avoid promoting fungus like leaf rust that thrives on wet leaves. Mornings are a good time so that the water has a chance to penetrate the ground and provide moisture through the heat of the day. How often depends on soil and climate and also how deep the watering penetrates the soil.  Even well watered plants will show some leaf curl on the hottest of days, so it might be best to check soil with a finger or wait till evening to see if leaves return to their normal healthy pose before watering again.  It's recommended that you can water a little more aggressively during the summer up to the point when figs begin to mature. Then slack off the water so that figs ripen slowly. Fast-ripening figs can be a little tasteless compared to those that are allowed to ripen over a longer period. 

Some people do foliar fertilize supplements, so you might want to search that to see if there's tricks/timing involved with that bit if business. 

Happy 4th and good luck with your plants!

Recomer20: Thanks so much for the great information. Now I now it's not a good idea (or needed) to water the leaves.

Watering the leaves is a bad idea for another reason. Besides promoting rust, it can cause sunburn spots if the leaves don't dry in time and the droplets magnify strong sunlight. The result is dead, black spots on the leaves where the water droplets were. Learned this the hard way, when I sprayed the tops of the trees by accident once.

Gardening in California, I have always watered leaves of most everything I grow. We have a long, dry season, and I find it very beneficial to occasionally water overhead to wash away dust and discourage spider mites, aphids, etc. I do it in the early evening, so that foliage is dry before any hot sun can burn, and also so that the plant can drink up maximum water overnight. Humidity is normally quite low here, so water related diseases are seldom a problem. During cool or foggy weather, I water at the soil level, to help keep leaves from staying too wet.