Plants are not producing fruit/veg

First of all I have NO mods!
I've played for 2 in-game weeks (Spring), I have a greenhouse full of SPRING plants. They have not bore me a single bit of produce. The only thing I receive from my greenhouse is the gems from the crystal tree? Is it because it's from a different pack? I don't know.

I believe this has been happening since the latest patch. I love my world, I made a new one for the new pack and I wanted to live off the simple living challenge and become wealthy royalty, without cheats. 

Can anyone give me advice for getting my plants to begin producing again. 

Thanks xxx