Giant bouquets and the arithmetic of scale
Doubling the number of stems does not double what anyone sees. A tied bouquet grows as a rough sphere, so most of the extra material goes into filling the middle, and the outline widens by a fraction of what the order sheet suggests.
This is the first thing worth understanding before spending on size.
Why width outruns height
Add stems to a spiral and the binding point stays where it is. The mass spreads sideways from that point, which is why a large piece reads as a broad disc from the front and is far deeper front to back than photographs ever show.
Height barely moves. Stems come in the lengths they come in, and beyond a certain point the only way to gain height is to build on a frame or a base rather than in the hand.
The practical consequence is a shape that clears a doorway at an angle and blocks it head on. Anyone measuring for one should measure the lift car, the turn on a stairwell and the gap between reception barriers, not the front door.
What it weighs, and who carries it
Wet stems are heavy. Hundreds of them, bound tightly with packaging on top, come out somewhere around a full bag of shopping, and every gram of that hangs from the single point where the piece is gripped.
Nobody holds that on outstretched arms for long. The handover is quick and close to the body, the recipient takes it for as long as the photographs need, and then it goes on the floor.
Two people is the normal arrangement for delivery. One carries, the other opens doors, holds the lift and takes off the protective cone at the last moment.
Outdoors, the second pair of hands earns its place for a different reason. A broad piece behaves like a sail, and a gust from the side turns a steady carry into a wrestle.
Choosing the material
Large-headed flowers build mass with fewer stems and hold a clean outline. Small-flowered filler reaches the same width for less money and looks loose from close range.
Colour has to be simplified. Individual heads stop registering at this size, so a single deep tone with one break in it carries across a room, while six shades mixed evenly turn into an indistinct field.
Structure is not optional either, since the lower stems crush under the weight above them during transport unless there is a frame or a dense spiral holding the load.
When to scale down
Giant bouquets are made for entrances, stages and rooms with an audience in them, and they earn their cost in the moment of arrival rather than over the following week.
A small flat cannot absorb one, no ordinary vase will take it whole, and the piece usually has to be split into several containers on the first evening anyway. If the recipient in Manchester then has to carry it across town, onto public transport or up to an office, a generous gesture turns into luggage within the hour, and a well-made arrangement of half the size would have served the occasion better.