Maybe one of the Dombeyas? I leave the deficiency question to others!

 Thanks Marilyn. I think you may be right. But large genus, mine seems to be slightly different to all those identified in the Internet. Norma

 I am sure I saw this growing in Rippon Lea gardens when visiting in April this year. The gardeners may be able to help identify. They are hoping to refurbish the grounds with all the original plants so you may have something rare.

 Could the plant be Hibiscus mutabilis "flora plena". This has double white flowers which age to pink, and then darker pink. The shrub is deciduous.

 Just found this query by accident. Norma, I wonder if your plant could be Sparmannia africana (African Hemp).

 I thought this was a tomato, a volunteer that popped up about a month ago. It"s grown very rapidly and is dead straight. It started flowering a few days ago but I"ve never seen a tomato plant with a flower like this. Any help would be most appreciated. Cheers Phil

 This is a follow up to my previous post. One of the flowers has opened up. Help. Thanks Phil

 Phil, I fear this is a weed -- we call it "cobbler"s pegs" (Bidens pilosa) -- the seedpods stick on to socks and animals fur and thus spread around prolifically. I would pull it out and put it in the green bin! Deirdre

 Many Thanks Deirdre You are a genius. It"s in the bin. Cheers Phil