Mono bouquets in Melbourne: chrysanthemums in May, tulips in spring
Among mono bouquets in Melbourne, chrysanthemums reach their local peak in May, the last month of the city's autumn, as Victorian fields thin towards winter and the imported share of cut flowers rises. A mono bouquet holds only one variety, so here the choice starts with the month rather than the colour. Autumn belongs to chrysanthemums, spring to tulips, and protea stays close to home on Australian growers' land.
Chrysanthemums at their local peak in late autumn
Melbourne's seasons sit opposite the northern calendar: autumn runs from March to May, and May closes it out. That same month is when local chrysanthemums are at their fullest, grown through Victoria's cooler weeks before winter sets the season down for good.
Once winter arrives, local fields thin and growers lean harder on imported stock, so the imported share of cut flowers climbs through the coldest months. May is the local peak for chrysanthemums; in winter the imported share rises.
The colour follows a custom of its own: coloured chrysanthemums are worn when one's mother is alive, white ones kept for remembrance. Spray varieties carry several smaller heads on one stem and sit as well in a vase as in the hand, which makes them easy to send without knowing the room they'll stand in. The city's flower calendar tracks what else is in season through the year, Mother's Day included.

Tulips in September and October, when the Dandenongs bloom
The Dandenong Ranges lie roughly 35 kilometres east of the city centre; Monbulk and Silvan are part of the flower-growing district. Silvan has run a tulip festival every September and October since 1954, showing more than 120 varieties across close to a million bulbs.
Victorian farms grow roughly two-fifths of Australia's cut flowers, by market estimates, and tulips are among the crops that flower on schedule with spring. A tulips bouquet bought in those two months sits closer to a local flower than at almost any other point in the year.
Outside spring the stems are not from local fields in the same way, which makes September and October the two months when a single-variety tulip bunch lines up with what is actually flowering in the hills east of the city.
Protea, the single variety farmed from Australian flora
Protea and leucadendron are grown as cut flowers from Australian flora, on farms across Western Australia, Victoria and New South Wales. The same wildflower trade also deals in waxflower, banksia and kangaroo paw, though that describes the trade at large rather than what sits in this particular section.
Victoria's own floral emblem, the pink heath, was declared in 1958, but it is never sold as a cut flower. Among mono bouquets, a protea stem is the nearer thing to a single Australian-grown gift, holding its shape on one thick head rather than a crowd of petals.
In winter the imported share of cut flowers is higher. A protea bunch, by contrast, can be called Australian-grown without guessing.

When choosing mono bouquets in Melbourne, the month decides more than the colour: chrysanthemums in May, tulips in September and October, protea whenever a single Australian-grown stem suits the occasion better than a hydrangea. Mono bouquet delivery in Melbourne is free within the centre and charged by zone elsewhere, every bunch is photographed before the courier leaves, and the timing for each one is shown on its own page; zone rates sit under delivery terms.