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Heather’s Weather Whys: What makes the flowers bloom?

Now that it’s April, it’s time to start watching the trees for signs of new buds! The exact “leaf out” date varies from year to year, so what is it that tells the plants it’s time to “wake up”? Find out in this week’s Heather’s Weather Whys.
Credit: WGRZ

Now that it’s April, you may find yourself checking that tree in your yard for signs of new leaves. Or maybe you perk up along with the annual bulbs in your front yard flower bed. 

Signs of spring are fast approaching, but we’re not quite there yet in Western New York.

But down in Washington D.C., spring is bursting from the branches of the cherry trees. Sunday marked the peak bloom day for the famous pink and white flowering trees along the tidal basin. This year’s peak was a couple of days earlier than normal, and that’s been a trend over the past few years.

Each March, forecasters try to pin down the three to five days that these trees will be at their most brilliant. But how do they know when the trees will flower? Better yet, how does any plant get its warm weather wake-up call?

There are two big factors. Find out what they are and when the cherry trees in our own Delaware Park are expected to bloom in this week’s Heather’s Weather Whys.

New episodes of Heather’s Weather Whys are uploaded to the WGRZ YouTube channel every Wednesday evening. Subscribe to the channel to get a notification for new episodes and to see lots of other great content from Channel 2. If you have a weather or climate question for Heather to answer, send it to her on Facebook or Twitter.

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