What is a seed potato?
21.08.2023 - 11:56
/ theunconventionalgardener.com
/ Emma Doughty
A seed potato is a potato that has been grown to be replanted to produce a potato crop. It’s the usual way that potatoes are made available to farmers and growers – although it is possible to produce potato seeds (also known as True Potato Seed, TPS), it is unusual to do so.
A potato is a tuber, a way for a potato plant to store energy so that it can regrow next year. In spring, potato tubers will start to sprout new growth from growing points called eyes. Each potato has several eyes.
Although the potatoes in your fridge will start to sprout if you keep them too long, it’s not recommended to plant those in the garden, because they could be contaminated with blight spores and viral diseases. For the same reason it’s also not a good idea to let leftover potatoes (volunteers) sprout in your vegetable garden.
Seed potatoes are guaranteed virus free. In the UK many of them are grown in Scotland, where the climate doesn’t favour the aphids which spread virus diseases elsewhere. Some potato varieties are made available as microplants or microtubers – plants and tubers that have been produced in sterile lab conditions to ensure that they’re disease-free. This is usually done for heritage/ heirloom varieties, not the most popular ones. It’s also now possible to buy dual-purpose plants that grow both potatoes and another crop – e.g. the TomTato and Egg & Chips plants – but note that these plants will need extra feeding and watering to produce a good crop of either vegetable.
Shopping for seed potatoes is a lot like shopping for potatoes in the supermarket – ideal candidates are firm and free from blemishes. Later in the season they will start to sprout; it’s OK to buy seed potatoes that have formed short, green sprouts, but it’s not
The website greengrove.cc is an aggregator of news from open sources. The source is indicated at the beginning and at the end of the announcement. You can
send a complaint on the news if you find it unreliable.