03/14/2026
Most of my life, I didn’t need a calendar to know the season. The flowers and plants told me what time of year it was.
I grew up in Maryland, and every year the old-fashioned lilacs bloomed right around my birthday — April 28. Not early. Not late. Just right.
From 1978 until the early 2000s that timing was so reliable it became one of my personal markers of the year. My birthday meant lilacs. Lilacs meant spring had truly arrived.
Gardeners used to live by these quiet plant calendars. Dogwoods. Lilacs. Apples….
The timing isn’t magic — it was biology. Plants don’t bloom because of the date on a calendar. They bloom when they’ve experienced enough accumulated warmth after winter. Scientists call this growing degree days — a way plants track how much heat has built up in a season. Once that warmth threshold is reached, they bloom.
For generations this created a reliable natural clock. The Farmer Almanac!
Then one day in 2005, when I was working at Tuckahoe in Virginia, I saw something that gave me chills: a lilac blooming in November. It felt wrong in my bones.
Today it’s March 14 in Asheville, North Carolina, and my lilacs are already blooming — about four to six weeks before they should here. The plants themselves aren’t confused. They’re doing exactly what they evolved to do: reading the temperature and responding to the warmth they experience.
What’s changed is the climate they’re reading.
Across much of the United States, many spring plants are now blooming weeks earlier than they did a generation ago. The natural calendar that farmers, gardeners, and whole communities once relied on is shifting.
For centuries people paid attention to these patterns — a practice called phenology. Watching when lilacs bloomed, when frogs sang, when birds returned. It was one of humanity’s oldest ways of understanding time.
We used to share a calendar with the living world.
When lilacs bloom on March 14 instead of April 28, something subtle but profound changes. It’s not just about flowers blooming off schedule.
This week, the low temps will wipe out all the flowers that think it’s already Spring….
