Zantedeschia (#3)

In 2011 I saw this cultivar in a friend's garden.
The spathes were pure yellow and the leaf blades hastate.

2012 Next year I got one tuber from him. The plant had been treated with chemicals by the producer. It showed the consequence of this procedure in a double spathe in 2012 and a double spadix in 2013.
The plant in my garden was much smaller, because the tuber was smaller. The next inflorescence was normal. It resembled 'Best Gold' that I saw also in 2011. Besides, the owner of that garden had a cultivar looking like 'Brilliance', which I photographed on the same day in one shop. For sure he bought them together. These were his first Zantedeschia plants in the garden.
2013 In 2013 in my garden it was already fully grown, showing the long leaf blades, tall and long spathes.
In the infructescence there were not many fruits, but they were very large.