Trees

[latent rapids]

I have a question about my trees. Not sure if I'm glitched or doing something wrong.
I've fully upgraded my trees in the lab, they're fully grown but I can't get Durian or Mango to give me highest quality fruits. I only get bronze and silver from them when harvesting them. Is something wrong? Do I need to do something else? Am I glitched?

[rare hill]

Just to double check - you did upgrade the fruit trees, and not the fruit plants?

Do you have other fruit trees that are giving you high-quality fruit?

[latent rapids]

I upgraded everything. Everything is at max upgrade.
Yes, others are giving it but not those for some reason. I can't figure it out.