Mono bouquets in Sydney: protea, tulips and a single variety for each gift
Mono bouquets in Sydney include a protea section, alongside banksia, waxflower and the waratah, New South Wales's state emblem, which flowers around Sydney in September and October. All of them sit on the same list of Australian flowers grown commercially for the cut-flower trade. A single variety in a single colour keeps the choice simple, so it starts with who the bouquet is for and where it has to arrive.
Tulips, hydrangea or lilies: how many stems, and who lives there
A bouquet of large heads doesn't need many stems to look full. A handful of hydrangea or a few lilies already reads as a proper gift, while a dense, solid field of small flowers — the look most people picture for a mono bouquet — tends to start around two dozen stems. Neither number is a rule, just a sense of what each flower needs to fill a hand or a vase.
Cut tulips keep growing after the stem is trimmed, pushing up a centimetre or two a day and bending toward whatever light is in the room, so a tulip bouquet's shape shifts noticeably over a day or two.
Lilies need one more check before they go anywhere. Every year ahead of 14 February, RSPCA NSW reminds people not to give lilies to a home with a cat: every part of the plant is toxic, including the pollen and even water left standing in the vase. Where a cat lives, tulips or hydrangea are the safer gift.
Lily pollen also marks fabric on contact, which is why florists remove the anthers once the flower has opened, leaving the petals intact.

Protea, a cut flower New South Wales grows, in waratah months
Protea is one of the Australian flowers grown for the commercial cut-flower trade, farmed across New South Wales, Victoria and Western Australia, with most of the export crop sold on to Japan. Among mono bouquets in Sydney, protea is the local answer for anyone after an Australian flower rather than an imported tulip or rose, and it has its own place on the list here.
The waratah flowers around Sydney in September and October and carries more local meaning than protea, as the state emblem of New South Wales, but it isn't in the catalogue, so it stays background rather than something to order.
It's worth knowing that roughly half of the cut flowers sold in Australia are imported, which is part of why a flower actually grown in the state, like protea, stands out on the list.
Chrysanthemum or alstroemeria for a gift that has to last
Chrysanthemums, alstroemeria and cut orchids are the longest-lasting choices here, holding in a vase for two to three weeks against roughly a week for roses. A chrysanthemum's leaves tend to yellow before the flower fades, so it helps to strip them off and let the bloom carry the bouquet on its own.
In Australia, "mum" does double duty as a word for mother and as the short name for chrysanthemum, which is why it's the flower tied to Mother's Day; the date for it sits on Sydney's flower calendar.
Condolence flowers in Australia lean toward white: white lilies, white roses and white chrysanthemums, kept to white and pastel tones generally. A white chrysanthemum bouquet fits that occasion, while the same flower in colour suits a birthday or a thank-you instead.
A single-variety bouquet also works well left on an office desk, where one flower in one colour reads as tidy rather than overdone.

Every order is put together by a florist after payment, and the finished bouquet is photographed before the courier leaves. Most orders go out the same day they're placed, and the actual timing for each bouquet shows on its card; zones and timings in full are on the mono bouquet delivery in Sydney page. The easiest place to start is with tulips, chrysanthemums or protea.