Birthday in Chicago: farm stems in summer, greenhouse flowers all year
For a birthday in Chicago between May and October, Chicago Flower Market trades in stems from thirty-one Midwest farms. The lilies, gerberas and lisianthus that usually fill a birthday bouquet are greenhouse flowers grown all year, so a January birthday gets much the same choice as one in July. Start with what's in season in the birthday month, then pick the rose colour or shape, and let the venue, a restaurant table or a kitchen counter, decide the format.
A July birthday or a January one: what goes into the bouquet
Lincoln Park's Green City Market runs on Wednesdays and Saturdays from April to November and sells flowers and plants alongside its produce.
Peonies make the clearest case: Midwest farms cut them from late May into early June, so a birthday landing in that narrow window catches the one stretch when peonies are genuinely local. Hydrangea follows the same northern-hemisphere summer, so a July birthday meets it in season while a January one does not.
Lilies, gerberas and lisianthus carry a January birthday the same way they carry one in July, and peony-shaped roses, usually David Austin varieties, are on offer every month as well. Whatever month the birthday falls in, getting flowers through a Chicago winter or summer takes the same basic care on the way.

Birthday roses in Chicago: red, white-and-pink or turned by hand
Victorian flower dictionaries read meaning into colour, red for passion and pink for a gentler affection, though no single list was ever agreed on, so the colour is a nudge rather than a fixed rule. For a birthday, that still leaves red as the bolder choice and white-and-pink as the softer one.
The French roses in 11 French Roses are not a variety but a florist's technique. The outer petals are turned back by hand, opening the bloom wider than it would open on its own. 11 White and Pink Roses and Roses with Lisianthus round out the choice.
In the United States, stem count rarely matters on its own. People notice it on a single flower rather than once stems are gathered into a bouquet, so eleven describes a size more than it marks an occasion. Most roses sold in the country are imported, chiefly from Colombia and Ecuador, which is why they stay on offer every month of the year, long after any local peony season has closed.
A River North dinner or a party at home: basket, box or hand-tied
River North is Chicago's restaurant and bar district, and a birthday in Chicago celebrated there usually means the flowers are timed to a moment in the evening rather than simply dropped at the door. The time is agreed with the restaurant manager in advance, so the bouquet arrives for dessert or for the toast.
A basket stands without a vase, which suits a restaurant table where nobody wants to hunt for a container. Flowers in a box travel the same way, foam and all, ready to sit on a sideboard at home afterwards. For an evening at the kitchen table, a hand-tied bouquet works too, though an open lily sheds pollen that stains cloth and clothes, so remove the anthers once the lily opens. Fresh pollen lifts off fabric with sticky tape, never rub it.
The same order can carry more than flowers. A bento cake, sized to fit a palm, comes with a short message piped into the icing, and a card written in your own words costs nothing extra. Both sit alongside gifts to go with the bouquet. The florist photographs the finished bouquet before the courier leaves, and most orders are handed over the same day they are placed; birthday flower delivery in Chicago shows the zones and terms.

For a first pick, red or white-and-pink roses are the simplest place to start. Peonies are worth catching if the date falls in late May or early June. Flower baskets are the safest format for a table that already has plates and glasses on it.