The answers are "maybe" and "who"

It is impossible to say with 100% certainty that that brand of fertilizer is
the cause of the spike.

(who)
subjective pronoun
a pronoun that performs an action

(whom)
objective pronoun
a pronoun that receives an action

Actually I think the word "that" in this case would work without bringing
gender pronouns into it at all.

"Phalguy" wrote in message
...
hello everyone!

I switched to MSU fertilizer about 4 to 5 weeks ago!
This morning, I found my Phal Penang Girl, who finished blooming 2 weeks
ago, growing another flower spike!!! Is this related to the new MSU?

I like that!

Claude


PS: BTW, should I say who finished blooming or whom finished blooming?



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