Get Set, Grow! Episode Four

Seedlings sown outside will soon need thinning out, while indoor-sown seedlings will require hardening off. Lettie explains what all of this means in Episode Four

You might have some seedlings appearing on your plot after sowing seeds such as beetroot in the last episode. If you have lots of seedlings appearing very close together, you will want to thin them out. In this episode of Get Set, Grow! Lettie explains why this is important, how to do it and when to do it.

With your outdoor seeds taken care of, Lettie explains what hardening off is and why it’s important for any seedlings you’ve been growing indoors. This episode also runs you through sowing larger seeds such as squashes, courgettes and runner beans.

Also learn how to create a wigwam to support plants such as runner beans, and how to sow seeds in containers if you’re short on space. This is a packed episode of Get Set, Grow! with lots of advice to help you on your journey to growing a feast of delicious fruit and vegetables.

What you’ll need for Episode Four

We’ve made a list of all the gardening tools and seeds Lettie is using in the fourth episode of Get Set, Grow! We’ve included links to the RHS Shop so you can take a closer look or order anything you need, if you like. You may have some of these items already. Remember, you don't need to buy everything and you might be able to borrow some tools.

Essential tools

Seeds to source

In case you missed it...

Episode One

Plant strawberries and chit potatoes

Prepare your growing space, and plant your first crop – strawberries! Learn how to chit potatoes ready for planting in the coming weeks.

Episode Two

Plant potatoes, onions and garlic

Find out about crop rotation and why it's important for your plot. Plant your chitted potatoes, alongside onion bulbs and garlic sets.

Episode Three

Sow seeds outdoors and protect crops

You'll be guided through sowing seeds directly into your soil, separating seedlings, weeding, and staking and protecting your crops.

Episode Five

Plant out tender vegetables

Find out how to plant out tender vegetables, plus learn about successional sowing and protecting and feeding strawberry plants.

Episode Six

An update on the plot

Take a look around the plot with Lettie and see how things are growing. Plus get some handy tips on watering and feeding plants.

Episode Seven

Protecting your crops

Harvest cut-and-come-again lettuce and get some useful tips on preventing pests and diseases from damaging your crops.

Episode Eight

Harvesting potatoes

Harvest your first early potatoes, get a reminder on weeding and find out how things are growing on the Get Set, Grow! plot.

Episode Nine

Continue harvesting your crop

Discover our tips for harvesting crops like courgettes, chard, peas and broccoli. Plus, find out how to reduce powdery mildew.

Episode Ten

Harvesting and sowing crops

Check that your onions and garlic are ready for harvesting, learn how to transplant young leeks and get tips for sowing tasty greens and carrots.

Episode Eleven

Checking in on your plot

Take a tour of the plot to see how the crops are doing, find out what’s ready for harvesting, what to sow and what can now be removed.

Episode Twelve

How to clear crops

Clear your crops and sow another, see ways to prevent powdery mildew, harvest sweetcorn, prep the plot for winter and plan for next spring.

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The Royal Horticultural Society is the UK’s leading gardening charity. We aim to enrich everyone’s life through plants, and make the UK a greener and more beautiful place.