A honey flow happens when several conditions line up at once: a mass nectar source is in bloom, the weather lets bees fly and nectar secrete, and the colony has enough foragers to exploit it. This scene lays UK forage plants out on a ring like a calendar face — angle is day of year — so you can see each species' bloom window sweep past, and how warmth and rain reshape the forecast nectar flow feeding the hive at the centre.
Oilseed rape can yield an enormous, fast honey flow, but it also crystallises in the comb within days — beekeepers near large rape fields often have to extract almost as fast as the bees fill the supers, which is exactly the kind of timing problem this simulation is built to illustrate.
A 3D forage calendar ring lays UK nectar plants out by their real bloom windows around a beehive, and lets you reshape the forecast nectar flow with the season, region, temperature and rainfall.
Each plant patch only brightens and releases nectar particles when the rotating calendar pointer sits inside its bloom window, and temperature/rainfall multipliers throttle that raw bloom signal into an actual forecast flow.
Drag the calendar-day slider or press Animate season to sweep through the year, pick a UK region to shift bloom timing, and adjust temperature and rainfall to see the flow forecast and supering advice respond live.
Below roughly 12–13°C most nectar-bearing flowers barely secrete and foraging bees stay home, which is why a warm spell during a bloom window matters as much as the bloom itself.