- Joined
- Dec 4, 2017
- Messages
- 2,148
In our winter I grow (Irish) potatoes and I have to fertilize heavily because they're heavy feeders. Once they crop out I use the ground for my summer sweet potatoes and I don't fertilize at all. The sweet potatoes are a completely different species than Irish potatoes and they'll mop up any nutrients that the Irish potatoes leave behind. Sweet potatoes don't need a lot of nutrients and too much nitrogen will result in a lot of vine and precious few sweet potatoes.