Unknown plant

Unknown plant

Observation - Unknown plant - UK and Ireland. Description: Reasonably tall (up to approx 1m) pale yellow flower spikes. Slender leaves. Unfortunately I've not photographed it very well but hopefully recognisable to someone.

Reasonably tall (up to approx 1m) pale yellow flower spikes. Slender leaves. Unfortunately I've not photographed it very well but hopefully recognisable to someone.