Forever roses in Barcelona: a Sant Jordi red that stays on the shelf
Forever roses in Barcelona start with a date: Sant Jordi falls on 23 April. It is not a public holiday, but it is Catalonia's main flower day, and the rose is its flower. A forever rose is a real rose, cut as it opens, and indoors it stays in that exact stage for one to three years, so nobody puts it in water. Pick one by colour, case and bud count; Barcelona's flower dates cover everything else on the calendar.
Catalan red or a quieter powder pink: the colour of the bud
The traditional Sant Jordi rose is red, and every case keeps that option: a single bud under glass, three buds under the same dome, a cluster filling the acrylic case, or red roses inside the heart-shaped box.
Powder pink and white read softer, further from the Sant Jordi custom and closer to an ordinary thank-you gift. Both shades turn up under the dome and inside the acrylic case, and the hat box carries them too.
Purple and blue only come as a single bud under glass. The stem draws up a glycerine solution on its own, and dye travels in with it, which is how a rose ends up a colour no rose grows in.
Settling on a shade first makes sense: the case follows from the colour, since not every shade sits in every container.

Beside the book on the shelf: dome, acrylic case or velvet box
On Sant Jordi, the custom swaps books for roses, which makes a dome on the bookshelf, next to whichever book arrived with it, a fitting spot rather than a fixed rule.
The dome holds one or three roses and needs nothing done to it beyond standing it upright. The acrylic case holds four, nine or twenty-five buds, visible through its walls from every side. The hat box opens by its lid and holds nine or nineteen roses inside.
Keep any of them indoors, away from direct sun, since the dye fades in it, and away from heat, bathrooms and kitchens, where splashes reach. A sunny balcony door counts as direct sun too.
Dust comes off with a soft dry brush. No water, no spray, ever.

Forever roses delivery in Barcelona: what arrives at the door
Forever roses in Barcelona arrive as a finished gift: whoever opens the box needs no vase and no water, since the rose is already preserved and arranged, exactly as it will stay.
The florist photographs the order before the courier sets off, so the sender sees the bud's actual shade before it ever leaves the shop.
The card is free, and the sender can sign it or leave it blank; the recipient gets no call ahead unless the sender asks for one.
Delivery is free in the centre, while other districts carry a flat zone price added at checkout. Most orders go out the day they're placed, and the exact timing sits on the product's own page; the delivery terms cover both.
Deciding where to start is simple enough: a single bud under a glass dome suits a shelf with little room, and a clear acrylic case suits a cluster that shows every bud. A velvet hat box holds nine or nineteen stems, and a heart-shaped box carries the red Sant Jordi gift itself.