Spillover Season: What the Christmas Run Does to the Rest of Your Auction List

The floor tilts before the calendar does

Somewhere around the third week of November, the sales room changes character. Buyers who spent October arguing over alstroemeria grades are suddenly bidding three lots at once, and the clock on anything red, white or coniferous starts behaving oddly. That part everyone expects.

The interesting part is what happens to the stems nobody came for. Festive demand doesn't stay in its lane. When volume leans hard towards Christmas lines, the rest of the catalogue gets repriced by consequence rather than by appetite — and a florist watching only their own shopping list can end up paying January money in December, or worse, taking home a "bargain" that never makes it out of the cold store.

Spillover is an allocation story, not a sentiment story

It's tempting to imagine the market getting collectively misty-eyed about amaryllis and paying over the odds for everything. The mechanism is duller than that. Growers book their winter cropping months ahead, and a Dutch or UK glasshouse given over to red roses in weeks 48 to 51 is a glasshouse not producing something else. Add transport and cold-chain capacity into the same narrow window and you get two opposing effects running at once.

The squeeze. Stems that share land, labour, packing lines or consignment space with Christmas crops get thinner on the ground. Fewer boxes on the floor, shorter grades, and the odd week where a line you buy weekly simply doesn't appear. Prices firm not because demand has risen but because supply has quietly stepped aside.

The dump. Then there's the opposite. Crops that come on regardless of the calendar, or that get cleared to make room, arrive in lumps. A glut lands on a Tuesday, the clock runs long, and quality gets discounted alongside the quantity. Buyers who mistake a cleared line for a good deal are the ones writing off stock in the second week of December.

Both effects are real, and they usually arrive in the same catalogue.

What moves first, and what gets dragged along

Red roses are the headline act, and white roses follow close behind — wedding and funeral work doesn't stop for mince pies, so white demand stacks on top of festive volume. Conifer, skimmia, hypericum, ilex and the various berried bits go early and go hard; by the first week of December, foliage is often the tightest thing on the floor rather than the flower.

The dragged-along list is less obvious. Gypsophila, eucalyptus, standard carnations, chrysanthemums and alstroemeria — the bread and butter of a UK retail shop — tend to feel the squeeze first and the dump second. Expect a couple of thin weeks followed by a correction that looks more dramatic than it is.

And then the substitutes. Anything that can plausibly stand in for a Christmas line gets pulled into the slipstream: coloured carnations in deep reds, spray roses, hypericum alternatives, even dyed and preserved material. Substitute demand is the most volatile in the building, because it exists only while the real thing is scarce.

Reading the weeks

Late November (weeks 47–48). Christmas lines begin to build but the floor is still broadly normal. This is the window to buy your ordinary volume for the first fortnight of December. If you leave it, you'll pay a premium for the privilege of buying in a crowded room.

First week of December (week 49). Peak congestion. Expect firm prices on reds, whites and foliage, thin availability on mid-range everyday stems, and a scattering of oversupplied lots that look tempting. Check the grading before the price — a cheap box of short stems is expensive labour.

Mid-December (week 50 onwards). The floor starts to empty of festive material and refills with whatever's left. Quality variance widens sharply. Buy for the week you're in, not for the one you hope to have.

What to watch on the clock

The headline price is the least informative number on the screen. Watch lot composition instead. When a grower pack suddenly turns into a mixed box, or when a familiar standard bunch drops a grade without dropping in price, that's spillover showing itself. Shrinking box sizes are another tell — same price, fewer stems, and a margin that disappears quietly.

Second clocks and late lots are worth a look in the current climate, but only for lines you can shift inside 48 hours. Anything that needs a week of conditioning before it sells is not a bargain at any price in December.

Where to hold back

Hold back on novelty. Experimental varieties, unfamiliar colours and anything you'd need to explain to a customer are the first casualties of a distracted market. Hold back on volume you can't condition and store properly, and hold back on any lot you're buying because the price fell rather than because you have a buyer.

Treat the December premium as a budget line rather than a surprise. It arrives every year, it's well documented, and the florists who handle it best are the ones who bought their everyday stems in the calm before the tilt — then spent December buying only what the room genuinely had to offer.