Get your tickets for the greatest show in Earth at an RHS garden near you.

Where nature puts on an unforgettable performance of colour and fragrance.

The scenery changes many times in one season and our finest trees will happily play the part of.

The best hiding place ever.

Booth.

Put your day out of dreams in the hands of the experts.

It's the greatest show in Earth.

At an RHS garden near you.

Book tickets online for discounts plus under fives go free and under 16 to five pounds.

If your plants could talk to you, what would they say?

Mine would probably say, let us in, it's cold outside.

But we may not have to wait for much longer to find out in truth.

Scientists from MIT and the University of California have used nanotechnology to teach spinach to send emails.

I think spinach might be a good option for me by the end of the week. They'd be more coherent

than my emails. But an experiment found out that when engineered plant's roots detect

certain chemicals in the groundwater, the leaves can send out a signal. The researchers

read that signal using an infrared camera to send an email alert. It's also thought that this technology could help warn us about problems like pollution and climate change.

Plants can absorb an incredible amount of information from the world around them,

so scientists think that they're well suited to monitor ecological changes.

So perhaps in the future we could all be getting emails from our plants to tell us when they need watering.

This is Gardening with the RHS. I'm Fiona Davison.

We're also looking to the future today as we discuss sowing seeds. Later in the episode, we'll be hearing from an RHS advisor about how to grow our much-loved houseplants from seeds and our chief horticulturist will be helping us sow seeds like a pro.

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