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Before the seeds germinated, I did not know what kind of plants they will be is the most popular phrase on the web.

Before the seeds germinated, I did not know what kind of plants they would be 11 results on the web	Before the seeds germinated, I did not know what kind of plants they will be 12 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
It doesn't look like this phrase is very popular! The search could not find any examples on the internet.	I did not know what housework was until my maid resigned. Look, I did not know what had happened here. As I did not know what to do, I asked him for advice. When I started with you all, I did not know what you were capable of. I did not know what was wrong with me. Although, I admit, I did not know what to expect. I just happened to hear the bell and I came unprepared and, to be honest, I did not know what was going on. Since we're being honest, I did not know what bunting was.

Before the seeds germinated, I did not know what kind of plants they would be

11 results on the web

Before the seeds germinated, I did not know what kind of plants they will be

12 results on the web

More popular!

It doesn't look like this phrase is very popular! The search could not find any examples on the internet.

I did not know what housework was until my maid resigned.
Look, I did not know what had happened here.
As I did not know what to do, I asked him for advice.
When I started with you all, I did not know what you were capable of.
I did not know what was wrong with me.
Although, I admit, I did not know what to expect.
I just happened to hear the bell and I came unprepared and, to be honest, I did not know what was going on.
Since we're being honest, I did not know what bunting was.