Cymbidium orchids

I have had this huge rusty old pot for an absolute age and it’s full of cymbidium orchids , oxaylis and watsonia. It’s never done anything and I have only ever had one spike of orchids on it, but late last year we chopped down a huge cotoneaster limb from next door and now it gets full late afternoon sun. I can’t believe it, there aren eight spikes and it’s gone totally nuts. I am thrilled to bits - it’s changed the whole look of the garden on that side, I must add that the huge old pot was supposedly for boiling down whale blubber. I have my doubts