Potatoes generally have a dormancy period (4-8 weeks after harvest) before they sprout.
Can you start potatoes from store bought potatoes?
You can grow potatoes from store bought potatoes, but they are often treated with clorproham (an herbicide/sprout inhibitor). Potatoes without sprouts are more attractive on store shelves. However, treated potatoes take longer to sprout, and the resulting plants may show stunted growth.
How long does it take for store bought potatoes to grow?
Keep in mind that if you store your potatoes at a higher temperature they may sprout sooner and faster. A typical length dormancy period is around 2 to 3 months depending on storage method, potato variety and storage temperature.
Are store bought potatoes safe to grow?
Unlike seed potatoes, which are certified to be free of disease, grocery store potatoes may be harboring pathogens like blight or fusarium. If you're concerned about introducing disease-producing plant pathogens into your garden soil, you can always grow sprouted potatoes in a container.
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