Roses in San Francisco: Andean stems and how to choose them
Colombia supplies more than 60% of the cut flowers the United States imports, Ecuador about a quarter, and roses in San Francisco come from that same flow, with Ecuadorian roses named explicitly in the range. Ecuador's smaller share still grows the longest stems: Andean farms sit at around 2,800 to 3,000 metres, with daylight holding close to twelve hours all year, the combination behind that length. So choosing here starts with the type and the stem, and only then the count and the colour.
Roses from Andean farms, and the Dutch white beside them
Ecuador's rose farms sit in the Andes at around 2,800 to 3,000 metres, where daylight holds close to twelve hours all year round. That steady light is behind the long stem, often running from 70 centimetres past a metre, and it is why 19 White Ecuadorian Roses suit anyone who wants length over bulk.
Dutch roses sit beside them in the range: classic greenhouse varieties with a stem that usually runs shorter, such as 25 Dutch White Roses. A French rose is not a variety but a florist's technique: the outer petals are bent back by hand to open the bloom wider. Peony-shaped roses are usually English varieties bred by David Austin and similar growers. Their shape sits closer to a peony than to an ordinary rose. The 15 French Roses "Jumilia" carry that reflexed look in a bud up to 7 centimetres, white at the base and edged in pink.

Stem count and height answer different questions. The count decides how full a bouquet looks, while the height decides which vase and which table it will actually fit. For the longest stems, the Ecuadorian roses above are the place to look; a low vase sits better with a Dutch one.
The largest arrangements in the range belong to giant rose bouquets, built from stem count and height together. Outside Eastern European tradition, a dozen is an ordinary number to order.

Colour does most of the choosing: the range can be sorted by red, pink, raspberry and white, and pick a colour narrows it down in one step. In Chinese tradition, kept by many Chinese-American families in the city, white flowers are tied to mourning rather than given as a gift, so a white rose bouquet is not the safe pick for that household.
A rose bouquet need not stand alone. Roses mixed with other stems bring in spray roses or chamomile, lighter and less formal than a monobouquet of roses on their own. For anyone who would rather not settle the shape themselves, a ready bouquet shape or a designer-wrapped bunch leaves that decision to the florist.
Choose by height first if the Ecuadorian stem matters most, or roses by the stem count if fullness matters more. Delivery is free in the city centre, and the florist photographs the finished bouquet before the courier leaves; the exact timing for roses in San Francisco sits on each bouquet's own page, with delivery terms covering the rest. Flowers for the city's dates and addresses, from hotel desks to the next holiday, are gathered in one place.