Mixed bouquets in New Jersey: year-round stems and a summer hydrangea
Mixed bouquets in New Jersey pair a rose with lisianthus and a hydrangea with Misty, and of those two pairs only the hydrangea keeps a real season: it's a northern-hemisphere summer flower, while lisianthus comes from a greenhouse all year round. The useful question to settle first is which flower should lead the arrangement, because the month then tells you whether a hydrangea head is likely to be part of it.
Roses with lisianthus, hydrangea with Misty: pairs that share one wrap
Most arrangements here work as a duet, a round solid head set against something lighter. Roses with Lisianthus puts a rose in the centre and surrounds it with lisianthus, whose ruffled, paper-thin blooms soften the straight rose heads around them. A hydrangea paired with Misty runs the same idea from the other side: the hydrangea supplies one dense dome, and Misty's small blooms fill the space around it rather than competing with it for attention. Lily and gerbera take a third route, standing two large heads side by side instead of setting one head against a cloud of smaller flowers.
Where the large head drops out altogether, a bouquet with Misty Bubbles and Chamomile is made of small flowers only, chamomile's flat white faces set against the finer, airier Misty Bubbles. The pairs in this section are built the same way throughout: a large head next to flowers that stay light and close to it.

Lilac for May, hydrangea for summer, greenhouse stems in between
Of the flowers named above, hydrangea is the only one with a genuine season: in the northern hemisphere it's cut through the summer months, which is when a hydrangea-led bouquet is easiest to put together. Lilac has an even narrower window, cut in May, so a bouquet with lilac belongs to that month and not really to the rest of the year.
Lily, gerbera, lisianthus and alstroemeria are greenhouse-grown and cut all year, which is why roses with lisianthus or lily and gerbera don't depend on the calendar the way a hydrangea or a lilac bouquet does. New Jersey's own fields sit in the background rather than in the bouquets themselves: Holland Ridge's tulips bloom from mid-April to early May, Presby's irises from mid-May to early June, and Colonial Park's roses peak in early June.
Peonies follow a stretch of their own again, cut across the Northeast from the end of May to the start of June, in a separate section from mixed bouquets.
New Jersey runs from humid summers to cold winters, and the gap between summer heat and winter doorsteps has a lot to do with how long any bouquet lasts once it's indoors.
Mixed bouquet delivery in New Jersey when one flower has to stay in
Flowers for a mixed bouquet delivery in New Jersey are bought after payment, not pulled from a stockroom ahead of time. If a particular stem isn't available that day, the florist swaps it for one close in shade and price, and the swap shows on the photo sent before the courier leaves. Anyone who needs a specific flower kept in the bunch, hydrangea included, should say so when ordering rather than leaving it to the substitution.
The chat works the other way round too: describe the occasion and the budget, and a manager sends back a few options with photos and prices before anything is paid. Most orders are handed over on the day they're placed, and the exact window for any one bouquet shows on its own card; zones and timing in full are on the delivery terms page.

Choosing a mixed bouquet in New Jersey really comes down to how much say you want the florist to have. Set on a single flower rather than a pairing, start with single-flower bouquets or with roses on their own; happy to let colours and shapes be combined freely, look at designer bouquets instead.