Gardening

Hello!

My name is Lupin and I am probably going to be spamming this page with questions sooner or later. I always seem to do that when things go wrong with my plants (I have a horrible black thumb and seem to be able to kill off cacti. Cacti.) and the garden in our backyard. Hopefully, I'll become a little more plant savvy like my dad and grandfather.


Anyways, my question is this:

I have a Senecio radicans (better known as String of Bananas) that is better off inside that outside as I discovered when I forgot to water it for a week and most of it became burnt from 90+ degree weather. It's since popped back up in the last few weeks and is doing well now that it's in my room which gets a nice amount of afternoon sun. I have been watering once a week, give or take a day depending upon work and if I remember.

However, in its pot, along the top of the soil, is a bunch of fuzzy patches of white mold.

I know a few techniques for getting rid of mold, but I've also been told you can leave it alone, and if you want to prevent it, don't water it so much.

What do you guys think I should do? With my black thumb, if I tend to leave plants alone, they do better :P

ANOTHER QUESTION:

It has many burned/shriveled leaves on its branches, and a lot of healthy green ones. Should I pull the dead ones off or will they fall off on their own?