Geranium Cutting Throwing New Colour

Question

My nan gave me a cutting of her velvet looking burgandy ivy geranium 3 months ago & I successfully got it to grow roots. Last month it threw its first flower spike, a gorgeous burgundy colour but 2 weeks ago it had 2 new spikes open… one burgundy & one a velvet deep purple.
Yesterday three new clusters all started to open up & they’re all purple coloured. My nan said she’s had hers for 3 years & it’s only ever produced the burgundy flowers. How does it happen?

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Answer 1

I like the new color! This random occurrence is known in the gardening world as a "sport" and is a genetic event. Most often, the plant will eventually go back to its original bloom color. Here's an article that describes sports:
https://www.gardeningknowhow.com/garden-how-to/info/plant-sport-mutations.htm