Can lupin flowers change colour?
I know this sounds potty but yes, the flower spikes on this one plant are now solid purple. I have always been careful to not let my three plants set seed so its not a rogue seedling. I did top dress the soil with my homemade compost last autumn and I know that it is on the acid side. This is only the second year it has flowered. The manhatten lights plant looked brilliant last year so you can imagine my disappointment.