Outdoor - Pistils black tips

Hey community,

I am a first time grower and opted for Banana Monkey. I grow them outdoors on my balcony.

I made a couple mistakes in the beginning in regards to light due to low temps outside. The plant didn’t grow very high but it still grew nicely into the flowering phase.

A couple days ago I noticed that the pistil tips are now black. I haven’t done anything special compared to the last couple weeks.

Picture 1 shows the black pistils and picture 2 shows another plant of mine that at least in my eyes looks healthy. Does anyone know what could cause the black pistils?

Thanks a lot!