Check your area for average rainfall, during the expected growth time frame. You might not have to water much at all. The fewer times the better if gorilla growing, as not to leave a trail or beaten path. The plants are small and bulking the soil with water retaining material: perlite, vermiculite, coco coir, peat moss, wormcasting and other amendments. As stated the amendments will help even if in the yard or garden. Are you located in the northern hemisphere, where the soil is cold in spring? If so, you might think of planting in 1- 2 gallon containers, they warm faster then the soil providing excellerated root growth. You can also relocate if you find a more secure site with container growing. Though you will have to water more in containers then the ground, the growth of the warm roots will make up for it.