Indoor Using Ph13-14 twice?

[tiddlesman]

Hey guys!

I'll explain my situation before you tell me to re-read the label; which says to only use it for one week.

I have a few babies going, and it turns out the DP auto white widow, is going to take a month or so more then the rest. She's simply the most amazing, bud filled plant I've ever seen up close.
I used Canna PK 13-14 at around day 50-57, it's now almost day 70, would it be safe to use it again on my White Widow? She might take as long as 100 days.

Rather, what could happen to her if I use it again?

Thanks

 

[Muddy]

I use the Atami version, PK13.14, and often use it multiple times during flowering with no ill effects. P and K deficiencies can be common in mid to late flowering, especially in soil less mixes like I use, so I always like to have it on hand just in case.