The giant arum has bloomed! For the second time in Polish history.
At the same time, the scale supporting the inflorescence leaf began to dry out and lose its turgor, becoming wrinkled, while the spatha itself turned a deep burgundy, a sign of readiness to bloom. In the final stage, the plant began to emit a delicate fragrance, which gradually intensified over time. The final symptom was thermogenesis, the heating of the inflorescence to disperse the intense fragrance and attract pollinators.
Even before noon on Monday, August 4th, it was still unclear when the flowering would take place, although one could already faintly feel the moment approaching.
Photo: Piotr Dobrzyński
During flowering, the giant arum deliberately raises the temperature of its inflorescence. This fascinating biological phenomenon, called thermogenesis, allows the plant to more intensely emit a distinctive odor reminiscent of rotting meat. This unusual aroma, combined with the heat, serves to attract pollinators such as carrion flies and beetles, which mistake the flower for a dead animal.
Observing the flower was an inspiration for many. While waiting for the climax, one internet user wittily summarized the plant's unusual preparations, writing a poem: "Giant arum, grow / I'll go to the garden, / I'll inhale a healthy dose of its stench /."
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You can find out for yourself if it really stinks by visiting the University of Warsaw Botanical Garden on Aleje Ujazdowskie. The first visitors will be admitted at 10 a.m. Due to the overwhelming interest, the Garden's managers assure that visiting hours will be extended. For those whose sense of smell is too sensitive or who simply won't be able to see the giant arum fern live, there's an online broadcast. The University of Warsaw Botanical Garden launched it a few days ago and can be found on the institution's Facebook page.
