Building a Forage Map: Knowing What Blooms Within Three Kilometres

Two apiaries five kilometres apart can produce completely different seasons: one supers up in May and stalls in July, the other does nothing until the limes break. The colonies are the same, the beekeeping is the same. The difference is the land, and most beekeepers never map it.

The Circle That Matters

Honey bees will forage up to five or six kilometres when they must, but the economics favour close work. The great majority of foraging happens within two to three kilometres of the hive. Draw a three-kilometre circle around your apiary and you have enclosed roughly 28 square kilometres — that patch of land, and nothing else, is your colony's pantry.

Your job is to learn what is in it and, crucially, when.

Start With Satellite, Finish With Boots

Begin at a desk. Any satellite map view will show you the broad structure: woodland, arable fields, pasture, hedgerows, gardens, water, moorland, industrial ground. Mark the large blocks first — a 20-hectare block of oilseed rape or a wood full of sycamore will dominate a flow when it opens.

Then walk it. Satellite imagery cannot distinguish willow from alder, or tell you that the "scrub" along the railway is half bramble. Two or three walks across a season, one in spring and one in high summer, will teach you more than any map layer.

Build a Bloom Calendar, Not a Plant List

A list of species is only half the picture. What you need is a calendar: which source opens when, roughly how long it lasts, and whether it yields nectar, pollen, or both.

A typical temperate sequence looks something like this:

• Late winter — hazel, snowdrop, crocus (pollen only, critical for brood-up)
• Early spring — willow, blackthorn, dandelion (first real pollen and nectar)
• Mid spring — fruit blossom, oilseed rape, sycamore, hawthorn
• Early summer — clover, blackberry, lime, chestnut
• High summer — heather, himalayan balsam, garden forage, phacelia
• Autumn — ivy (the last major flow in many regions)

Your local dates will shift by two or three weeks year to year with the weather, but the order is remarkably stable. That order is what lets you predict.

Find the Gaps

The point of the calendar is not the flows — it is the dearths. Almost every landscape has one or two windows where the forage runs out: the classic June gap between spring blossom and summer clover, and a late-summer gap before ivy.

Dearth windows are where colonies starve quietly, where robbing starts, and where wasps become a problem. Once you can see them on a calendar, they stop being surprises: you leave more stores in the hive, you avoid taking the spring crop too early, and you reduce entrances before the trouble starts rather than after.

Use the Bees as Instruments

The colony reports on the landscape every day if you read it:

• Pollen colour at the entrance tells you what is being worked right now
• Hive weight rising or falling shows flow and dearth better than any calendar
• Wax building means a genuine nectar surplus
• Robbing behaviour almost always marks the start of a dearth

Log pollen colours a few times a month for one season and you will end up with a more accurate local calendar than any published chart.

Turn the Map into Decisions

A finished forage map should change three things: where you site colonies, how many you put on each site, and when you super, feed, or move. A site with a huge spring flow and nothing after June supports fewer colonies year-round than its May performance suggests — unless you plan to move them.

In ApiaryPilot each apiary carries its own location, forage log, and weather context, so bloom observations, hive weights, and harvest results all sit against the same site. Over two or three seasons that turns a hand-drawn circle on a map into a genuine picture of what your land can carry.