![Thrillers, spiller and fillers: Pretty planters have a formula at city’s Springbank greenhouse [Video]](https://canadanewsvideo.com/wp-content/uploads/2025/04/mp_757908_0_caitlinbyejpeg.jpg)
The City of London grows close to 25,000 plants in its greenhouse at 645 Springbank Dr. between January and May. They’re used in parks and downtown potted planters to beautify the city throughout the summer. Caitlin Bye, the city’s horticulture supervisor for parks operations, says there’s three important elements to a good potted planter: a thriller, filler and spiller.
Thousands of flowers are in bloom at the City of London’s greenhouse, in their final weeks of growing before city staff move them to various parks, streets and planters next month.
The mostly red, pink and purple flowers will soon beautify the city as the weather gets warmer and Londoners spend more time outside.
“Every year, we try to choose a colour palette across the city,” said Caitlin Bye, a horticulture supervisor for parks operations at the City of London. “We usually try to keep everything as coordinated as possible.”
Between …
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