Designer bouquets in Amsterdam: how a composition differs from a mix
Designer bouquets in Amsterdam stand in their own section, separate from the mixed ones, even though both combine several kinds of flower. The difference is the composition: a florist works out the proportions and the colour for one recipient and one occasion, rather than reading down a list of stems to include.
Hotels, hospital wards and the city's flower calendar follow the general rules set out on the hotels, hospital wards and the city's flower calendar page, and delivery zones across Amsterdam work to the same pattern.
Two sections, several flowers each: what makes a piece designer
In a mixed bouquet, stems of different flowers sit together mainly for colour and bulk. A designer piece is built differently. The florist picks a line flower to set the outline and height, a mass flower, a rose, a gerbera or a lily, to give the piece its weight and centre, and a filler to close the gaps between them. That balance between the three, not the number of species involved, is what separates a designer composition from a mixed one.
Authorship sometimes starts with a single flower rather than three. "21 French Roses" is built from one flower type: a French rose is not a variety but a technique, where the outer petals are turned back by hand until the bloom opens into a wide, loose cup. For something simply bright and varied, without that particular structure, mixed bouquets sit one section over.

Which roses and companions a designer piece is built from in Amsterdam
Roses in the Amsterdam catalogue come from more than one source. Ecuadorian stems run the longest, from about seventy centimetres to a metre. Dutch-grown roses are the classic greenhouse varieties grown closer to home, French roses are the hand-turned kind already described, and Misty roses complete the range.
Around the roses, a designer piece draws on companions grown in greenhouses: lisianthus, lily and gerbera are available year round, while hydrangea and, in spring, a hyacinth join them along the way. The cut flowers that reach Amsterdam travel in from Kenya, Ethiopia, Ecuador, Colombia, Israel and growers across Europe.
Peonies follow a narrower calendar: in the Netherlands they are cut from late April to June. Outside that stretch, the peonies section is the one worth watching, rather than this one.

From a designer box to a Giant: how large the gesture should be
A hand-tied bouquet is built in a spiral, a technique that also lets it stand upright on a table on its own, with no support needed. A designer box, a flower box and a basket behave differently: the stems sit in soaked foam, so the piece stays put wherever it is set down, and no vase is required.
For a bigger gesture, the scale goes up a size; for a gift meant for a whole group, it goes further still. Choosing between them comes down to the occasion and to the place the piece will actually spend its time: a hallway table, a desk, or the middle of a shared room.
Designer bouquet delivery in Amsterdam for a taste you know
Describing the recipient to the florist is the shortest route to the right result: a favourite colour, the occasion, a budget to work within. The manager answers in chat with a few options, photos and prices included, before anything is paid for, and a photo sent as an example lets the florist put something together close to it.
One local custom is worth mentioning in that brief. In the Netherlands, chrysanthemums and white lilies are flowers for mourning, so they are not the obvious choice for a happy occasion; a coloured lily is a different matter and stays very much on the table.
Flowers for a designer piece are bought only once the order is paid for, and the finished work is photographed before the courier sets off; anything that looks wrong is corrected first. A flower that is out of stock is replaced with one close in shade, and the change is visible on that same photo. Most orders are handed over on the day they are placed, and the exact timing is shown on the bouquet's own page; delivery is free in the city centre, and the delivery terms cover the rest of Amsterdam.
A bigger gesture starts with Designer Giants, one size up from this section, and a gift for a whole group moves further still into Premium Sets. Where the address calls for something that stands on its own without a vase, flowers in boxes fit the brief better than a hand-tied piece.