Although they are traditionally associated with warmer climates, with a bit of care and attention, you can absolutely have success growing sweet potatoes right here in the UK.
Quick Answer
To grow sweet potatoes in the UK, start slips indoors in early spring, plant out after the last frost, and ensure they have plenty of sunlight and well-drained soil.
Choosing the Right Varieties
When it comes to growing sweet potatoes in the UK, selecting the right variety is crucial. Look for varieties that mature quickly and are suited for cooler climates, such as 'Beauregard' and 'T65'. These varieties are more likely to thrive in our British weather.
Starting Your Slips
Sweet potatoes aren't grown from seeds but from slips. In the Midlands, I start my slips in late winter. Place a sweet potato in a jar of water, with half submerged, in a warm, sunny spot. After a few weeks, you'll see shoots, or slips, that you can gently pull off and root in water.
Planting Out
Once the risk of frost has passed, which here in Staffordshire is usually around late May, you can plant your sweet potato slips in the garden. Choose a sunny, sheltered spot with well-drained soil. Raised beds work wonderfully if your garden soil is heavy or clay-like.
| Month | Task | Notes |
|---|---|---|
| February | Start slips indoors | Keep in a warm, sunny location |
| May | Plant out slips | Ensure last frost has passed |
| June-August | Water and weed | Keep soil consistently moist |
| September | Harvest | Before first frost |
Caring for Your Sweet Potatoes
Sweet potatoes require consistent moisture, especially during the rooting and tuber formation stages. Water regularly, but avoid waterlogging. Mulching can help retain soil moisture and keep weeds at bay.
- Ensure they receive 6-8 hours of sunlight daily
- Mulch to conserve moisture and suppress weeds
- Regularly check for pests and treat organically if needed
Harvesting and Storing
Sweet potatoes are usually ready to harvest in early autumn. Gently lift them with a fork, being careful not to bruise the tubers. Cure them in a warm, dry place for about 10 days before storing, which allows them to sweeten further.
Frequently Asked Questions
Can sweet potatoes grow in pots?
Yes, sweet potatoes can be grown in large pots or containers. Ensure they have enough depth and drainage.
What pests should I watch out for?
Slugs and snails can be an issue. Check regularly and use organic methods to control them.
How do I know when sweet potatoes are ready to harvest?
Sweet potatoes are usually ready to harvest when the leaves start to yellow, typically around September.