Get growing subscription – September 2026

[Nelly Keen]

Hello keen grower!​

Welcome to your September ‘Get Growing’ seed subscription!

Here’s what’s in your box:

• Winter Lettuce Speckled Trout
• Swiss Chard Peppermint
• Mustard Wasabi

Winter Lettuce Speckled Trout​

Sowing info​

Surface sow onto moist compost and just cover. Lettuce will not germinate in hot weather, so do not supplement heat and avoid sowing in the hottest days of summer.

Growing info​

Heat tolerant and slow to bolt. When you harvest lettuce, you can just remove the lower, outer leaves to significantly extend your harvest period as the plant will continue to grow. Regular succession sowing will ensure a continuous crop.

Blog – How to sow and grow lettuce

Swiss Chard Peppermint​

Sowing info​

Sow in module trays 1cm deep. Grow on in the greenhouse until plants reach a height of around 5cm after the last frost.

Growing info​

Ready to harvest in 50 days. Harvest regularly by selecting a few stems from each plant to promote fresh growth and to extend the cropping season. More mature plants become frost hardy and will generally survive winter meaning you’ll have a harvest into the next year.

Blog – How to sow and grow chard

Mustard Wasabi​

Sowing info​

Surface sow onto moist compost and just cover. Plant out when big enough to handle. Alternatively sow direct 1cm deep. Regular succession sowing throughout the year will give an almost year round supply.

Growing info​

Can be grown as a spring crop but may bolt in warmer weather so will perform better in the cooler months. Treat as a cut and come again when harvesting. No need to cover it as it’s relatively unbothered by pests and birds.

Blog – Hardy greens to grow outdoors during winter

Garden jobs to do this September​

• Clear out spent summer crops and tuck the empty beds in with a cosy blanket of compost or mulch.
• Lift and divide tired, overcrowded perennials while the soil’s still warm enough for their roots to settle in.
• Keep deadheading and harvesting, every snip tells your plants to keep the good stuff coming.

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