Anyone wanting to send flowers in July or August faces a particular challenge: temperatures of 30 °C and above take a rapid toll on fresh blooms. Petals wilt, stems buckle, and what was meant as a beautiful gift arrives as a disappointing handful of greenery. It doesn't have to be that way. With the right timing, the right packaging and the right choice of varieties, flower delivery can work reliably even in the height of summer.
Flowers are living organisms. They breathe, they transpire, and they react sensitively to changes in temperature. In summer, outdoor temperatures in Germany often sit between 28 and 38 °C — and inside a closed delivery van it can get considerably hotter. Research from the logistics sector shows that the interior temperature of delivery vehicles can reach up to 60 °C in summer.
That means flowers transported without cooling or protective packaging have very little chance in the height of summer. At the same time, summer is peak season for birthdays, weddings, garden parties and spontaneous gestures — so demand for flower deliveries is at its highest precisely when conditions are at their most difficult.
Good preparation is essential for summer flower delivery. Sorting out the following points in advance will help you avoid the most common problems:
Not every flower is equally suited to being sent in the heat. The overview below shows which varieties have proven themselves and which ones are better avoided in summer.
Well suited for summer delivery: sunflowers (very robust, long vase life), lisianthus (stable in transit, stays fresh for several days), statice (almost indestructible, also suitable as a dried flower), celosia (heat-tolerant, striking appearance), roses as buds (classic and popular, travel well), chrysanthemums (long-lasting and robust).
Less suitable in high summer: ranunculus (very sensitive to warmth), lily of the valley (needs constant cool temperatures), anemones (wilt quickly), tulips (react strongly to temperature fluctuations). If you like to give flowers that match the time of year, you can order season flowers to see which varieties are currently at their best.
Anyone looking to order summer flowers should pay close attention to varieties that come directly from the grower — freshly harvested flowers contain significantly more cellular moisture and cope with the stress of transit far better than flowers that have already spent days in a wholesale warehouse.
Even well-intentioned flower gifts can go wrong when typical mistakes are made. Here are the three most common pitfalls:
Flowers that come directly from the grower have one decisive advantage: they are typically harvested shortly before dispatch. That means the stems are still full of water, the blooms have not yet fully opened, and their natural vase life is at its maximum. A bouquet from a supermarket has often already been sitting around for a week before you buy it — and in summer transit, that shows immediately.
Further tips for maximum freshness after delivery: cut the stems immediately at an angle, removing 2–3 cm (this increases water uptake); fill the vase with fresh, cool water; keep flowers away from direct sunlight and fruit (fruit releases ethylene, which causes blooms to age faster); change the water daily and re-cut the stems every two days.
Compared with other seasons — spring, when you can order spring flowers like tulips and daffodils that are considerably more resilient, or autumn, when you can order autumn flowers like dahlias and asters that prefer cooler temperatures — summer is genuinely the most demanding season for flower delivery. Follow the tips in this guide, however, and you have every chance of a successful flower gift.
Not all of summer carries the same risk. June in Germany is often still moderate — temperatures around 20–25 °C make delivery considerably easier than in high summer. July and August are the most critical months, especially during heatwaves. If you can, schedule flower deliveries in those weeks for early morning slots, or choose a provider with chilled logistics.
Regional differences also play a role: deliveries to cities with a heat-island effect (Berlin, Frankfurt, Munich) carry more risk than deliveries to rural areas. If you are sending to a city in summer, pay particular attention to express delivery and making sure the recipient knows to expect the parcel.
A brief look ahead: sending flowers in the cooler months is considerably easier. If you want to order winter flowers, for example, they are often more robust and arrive fresh even after longer transit times. But even in summer, with the right planning, a successful flower delivery is absolutely achievable.
It depends heavily on the packaging and the variety. Without cooling and at temperatures above 30 °C, most flowers survive 12–24 hours inside a parcel. With professional chilled packaging and water pillows, that window can be extended to 36–48 hours. That is why express delivery in summer is not an optional extra — it is a necessity.
Yes, but with some caveats. Roses are well suited when sent as buds — that is, not yet fully open. Fully bloomed roses are considerably more delicate and fare worse in summer transit. Choose robust varieties, and make sure you use express delivery and damp stem packaging.
Yes. Some specialist flower senders — particularly those working directly with growers in the Netherlands — offer insulated packaging with ice packs. These keep the temperature inside the parcel stable for several hours. Look for information about packaging when you place your order. Standard delivery without cooling is not recommended in high summer.
