Birthday in Madrid: from the Mercamadrid flower hall to one person's table
Flowers for a birthday in Madrid come from a region whose main cut-flower hub is the Mercado de Floristas, inside the 2.22 km² Mercamadrid market in Villa de Vallecas by the M-40. At JFLOO the flowers are bought for an order only after it is paid, so the better place to start is the person having the birthday: which rose or which colour they actually like, and where the bouquet will stand once it arrives.
Roses that arrive open and roses that open later
A French rose is not a variety but a trick of the hand: the florist folds the outer petals back one by one, so a bunch like 11 French Roses already looks fully open by the evening of the party, not two days later. Peony-shaped roses work the other way round. Most come from English breeding lines such as David Austin's, and the bud stays round and tightly packed rather than unfurling into a flat open face.
A third option sits between the two: a rose with a bud up to seven centimetres across, white at the base and pink along the edge. Cared for well it can last up to two weeks in the vase, where an ordinary rose manages about a week and sometimes stretches to ten days. For a birthday table that matters more than the colour, because the bouquet is meant to last past the party itself.
Roses rarely stand alone. Eustoma and chamomile worked in between the stems lighten the look and soften the red or pink. Eustoma is a greenhouse flower cut all year round, so this combination is not tied to a season and turns up in a bouquet in January as easily as in July. French and peony-shaped roses cover both the fully open look and the rounder, denser one.

Colour before variety when the bouquet has no rose
Not every birthday bouquet needs a rose in it. Where the catalogue goes without one, it moves to lilies, on their own or next to a gerbera, and to hydrangea heads in white or pink, and the easiest way to choose between them is by colour rather than by name.
One flower is worth skipping for a birthday in Madrid rather than reading about afterwards. Chrysanthemums are linked in Spain with 1 November and a visit to the cemetery, and many people would read one as an odd choice for a birthday table, so it is worth leaving out of this particular order.
Lilies carry a separate warning that has nothing to do with taste. Every part of the flower, including the pollen and the water in the vase, is toxic to cats, so a household with a cat is better served by a gerbera or a hydrangea than by a lily. Mixed bouquets with lilies and gerberas group both without naming a single variety. Through a Madrid July, flowers in Madrid need recutting and shade more than a different choice of flower.
A card, a mini cake or a basket beside the bouquet
For a birthday in Madrid, the extras often matter as much as the bouquet itself. A card comes free with every order, left blank or signed, and it can stay anonymous if that's the idea. A small bento cake sits well next to the flowers, and on a table with no room for a vase, a basket works instead. The order travels the same way as any other, through delivery zones across the city.

A birthday in Madrid often comes down to a short list: a rose that already looks open, a colour instead of a name, or something to go with the flowers. Small gifts to go with the bouquet, a card or a small cake, cover the second part. For a table that doesn't need a vase at all, a flower basket stands on its own.