Hermetospheres

Experiences with plant life in closed glass containers

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Decline and resurgence

This is another story of a plant that underwent prosperity, decline and resurgence in the hermetosphere. Follow the astonishing development of a small begonia from Borneo step by step.

Begonia lichenora was placed in a container together with a Labisia more than two years ago. The fern Davallia parvula was added a few months later. The creeping Begonia spread rapidly over the entire slope I had built for it and soon began to bloom (see the pair oft pictures below).

Container of 5 litres inspired by the flora of Borneo with Begonia lichenora and Labisia sp. 'Boyan'; 27 January 2024, 1½ months after onset.
Container of 5 litres inspired by the flora of Borneo with Begonia lichenora and Labisia sp. ‘Boyan‘; 27 January 2024, 1½ months after onset.
Container of 5 litres inspired by the flora of Borneo with Begonia lichenora and Labisia sp. 'Boyan'; 11 April 2024, 4 months after onset).
Container of 5 litres inspired by the flora of Borneo with Begonia lichenora and Labisia sp. ‘Boyan‘; 11 April 2024, 4 months after onset.

After this flowering, the entire begonia colony on the slope collapsed and died. Only a few shoots at the base of the Labisia survived. For months, thousands of springtails were busy decomposing the dead plant material on the slope (see the pair of pictures below).

Container of 5 litres inspired by the flora of Borneo with Begonia lichenora and Labisia sp. 'Boyan'; 13 September 2024, 09 months after onset.
Container of 5 litres inspired by the flora of Borneo with Begonia lichenora and Labisia sp. ‘Boyan‘; 13 September 2024, 09 months after onset.
Container of 5 litres inspired by the flora of Borneo with Begonia lichenora, Labisia sp. 'Boyan' and Davallia parvula; 26 June 2025, 18½ months after onset.
Container of 5 litres inspired by the flora of Borneo with Begonia lichenora, Labisia sp. ‘Boyan‘ and Davallia parvula; 26 June 2025, 18½ months after onset.

For a long time, I was unsure whether the few remaining shoots would survive. But then, much more slowly than the first time, the Begonia began to repopulate the slope. In addition, moss that was unintentionally introduced at the beginning is now slowly spreading.

Container of 5 litres inspired by the flora of Borneo with Begonia lichenora, Labisia sp. "Boyan" and Davallia parvula; 03 February 2026, 26 momths after onset.
Container of 5 litres inspired by the flora of Borneo with Begonia lichenora, Labisia sp. “Boyan” and Davallia parvula; 03 February 2026, 26 months after onset.

Stories like these show that one should never give up on a hermetosphere too soon. These often surprising developments make observing closed terrariums so fascinating.

Finally, it is worth taking a close look at a leaf of the recovered Begonia lichenora with its surface shimmering in different colours.

Shoot and leaf of Begonia lichenora as well as an unidentified moss; 03 February 2026; image focus stacked from 40 single frames.

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