National Trust's Sky Gardening Challenge 2025

Let's green Greater Manchester's Skyline together. Help nature thrive from your balcony or window box.
So whether you’re a gardening novice or a planting pro – if you have a balcony or window box, you can green the city above the ground. The sky really is the limit.
That’s why we’re encouraging Greater Manchester residents to welcome nature into their skyline space. To help nature bloom on every balcony.
To help you get started, we’re working with growing experts to bring you inspiration, guidance and gardening challenges to have a go at.
Sign up to National Trust's Sky Gardening Challenge 2025 to receive a free expert balcony gardening guide and monthly Sky Gardening Challenge newsletters via email or post.
ND: Make sure you check the terms of your lease and get relevant permissions from your housing provider/building owner before making any changes.
Launch Date
National Trust's Sky Gardening Challenge launches Thursday 3 April. You can sign up now, but we won't contact you to get started with Sky Gardening Challenge until then.
From Thursday 12 June, you can enter the National Trust's Sky Gardening Challenge competition for a chance to win exciting prizes. More info coming soon via the link below.
Follow Us
Get updates about National Trust's Sky Gardening Challenge and access extra balcony gardening advice by following us on Instagram and Facebook @NTSkyGardeningChallenge
33
Together, all the balconies in Greater Manchester cover an area the size of more than 33 football pitches.
1.4 million
Greening just ¼ of Greater Manchester’s balconies could host enough flowers to support 1.4 million pollinators.
152
In 2024, 152 species were found on 60 balconies around Manchester.

Contact us
Email us for a paper sign up form, or any other questions.
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