To use sweet potato as a ground cover or not to use sweet potato as a ground cover? that is the question... We recently had some swales made in an area the we are going to plant to bamboo and fruit trees... We have about 9000 square feet of exposed soil, and a window of opportunity to plant it up with ground covers and pioneer legumes... I have been procrastinating a little bit, trying to decide which species to use... At Tagari in northern NSW we used sweet potato, and it worked well, being so rampant with the significant disadvantage that it climbs and smothers young trees if not kept in check manually... There is a distinct cool season down there where the sweet potato goes pretty dormant too. Here on Maui, there is hardly the same dormancy period and I am scared that let loose the sweet potato monster will be unstoppable. At the same time, I am tempted to unleash its rampancy, as we are having limited success with the perennial peanuts which are great, but require more assistance initially in the form of weeding and watering, and are so slow compared to the sweet potato... IN the meantime, we are planning to sow red cowpeas and lana woolypod vetch, and a lima bean that grows a lot of biomass, and probably some pumpkins and watermelons, sunflowers and a chopndrop mix of pidgeon peas, sennas and cassias. But what to do about the perennial groundcover???