Evapotranspiration and moisture sensitivity of green-façade climbers: Hedera versus Lonicera henryi under repeated container drying

Description

A container experiment (Botanical Garden, University of Cologne) comparing gravimetric, leaf-area-normalised evapotranspiration in three Hedera taxa vs Lonicera henryi across repeated drying cycles. Hedera has higher ET but a steep moisture response (ET falls sharply as containers dry); L. henryi is lower but stable. The contrast is robust (survives moisture-timing, control-correction, whole-pot and dome-VPD sensitivity checks). Take-home: match climber choice to irrigation reliability. Framing is deliberately disciplined — no pF, no cooling-superiority claim, no universal threshold.

Institutions

• University of Cologne

  North Rhine-Westphalia, Cologne

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