We planted 7 sweet potato plants last autumn, 4 in large pots in the garden, and 3 directly into raised beds. The pots were not successful, the chickens ate the vines of 2 pots, and they didn’t produce anything. The 2 other pots flourished, but I turned them out too soon, t’internet said I’d have kilos and kilos after 4 months. Both had 2 reasonable sized tubers ( 6 inches long and 3 inches wide) and 4 or 5 tiny tubers. Rather deceptively, the larger tubers were at the top and the tiny ones at the bottom, so I fooled myself into thinking that they were all of a reasonable size. They’d been growing for 6 months, so longer than the recommended time for huge crops – don’t believe everything you read on Pinterest!
The potatoes in the raised beds are doing much better, the vines are spreading through the beds, especially now we’ve pulled up the tomatoes and courgettes, and are putting out runners, which will produce new plants and new tubers. The potatoes are growing near to the surface and are a good size. Below is one I picked this morning, with my flip flop for perspective (UK size 6). I’ll record how many I get, this one weighed 450gms, and I picked another that weighted 250 grams that was poking through the soil.
The pots were planted out last November and harvested end of April. The one’s in the beds were planted in January. We had pretty cold nights (12 degrees C 🙂 – it’s all relative) right until the end of Feb, so maybe it’s the warmer weather rather than the raised beds that have allowed these plants to do so well – they seem to be thriving in the 40+ heat.