Know when your flowers bloom — before everyone else.
BloomPing estimates when lilac and other spring flowers start to bloom in your city, and (soon) tells you by email. Alpha: Germany and Sweden, 5 flowers, free.
Subscribe — Free during alpha What’s blooming now
Right now
16 Oct 2026: none of our flowers is expected to be in season in Germany or Sweden right now. Next up: Forsythia in Cologne, expected start around 15 Mar 2027 (validated).
Status is based on expected dates from our model (weather of the last 20 years), not on live weather or live sightings.
Honest numbers
Every estimate carries a validated or approximate label and the error we measured in a backtest (mean absolute error, MAE, in days). We don’t claim accuracy we haven’t measured.
Germany + Sweden first
Open, commercially usable observation series exist for Germany (DWD) and Sweden (SLU). Ten German and six Swedish cities are covered in this alpha.
Free during alpha
$9.99/year Free
No card, no payment page. Subscribe to join the alpha list; during the alpha we do not send emails to subscribers (test mode), and you can leave any time.
Flowers in the alpha
| Flower | Germany | Sweden |
|---|---|---|
| Lilac Syringa vulgaris | 10 of 10 cities validated | 5 of 6 cities validated |
| Forsythia Forsythia × intermedia | 8 of 10 cities validated | 0 of 6 cities validated |
| Wood anemone Anemone nemorosa | 9 of 10 cities validated | 2 of 6 cities validated |
| Sweet cherry blossom Prunus avium | 10 of 10 cities validated | 2 of 6 cities validated |
| Horse chestnut Aesculus hippocastanum | 10 of 10 cities validated | 0 of 6 cities validated |
Lilac is the main flower and the best tested. “Validated” = checked against years of real local observations. “Approximate” = model estimate we could not check well enough; see How it works.