you can grow almost anything in the container. i really don't see any problem. tho i keep hearing that figs grown in ground taste better. as long as you provide proper water and nutrient, i don't see any specific reason why fig grown in the container will have any specific problem. so far my three 4 yr old trees are doing rather well in 10 gal container. another one 3 yr old one is doing well in 10 gal also. i have 2 yr in 10 gal also, it just got off from transplant shock and doing well now.. i like the fact that i can control things in container.