I'm no good at gardening, or rather I've never really done gardening so I haven't had a chance to get good or not at it.
One thing I've very not-good at is knowing if something is a weed or not, especially when it's just sprouting. Which is why I now have a greenhouse where I can start everything off, and then, once big enough put it into the garden.
The rule is now simple, if it's currently growing or sprouting in one of the borders, it's a weed, if it's growing or sprouting in the greenhouse it's a plant.
I'm going to assume if I do it enough, and photograph things enough, and document things enough I will slowly somehow learn what's a weed and what isn't. But that feels like a few years away, for the moment this is a safer bet.
Bulbs though, I'm pretty good at knowing they're not weeds 'cuase they're generally sturdy as fuck and pretty distinct. Even so, it's nice to have these growing in the greenhouse rather than out as squirrel and bird fodder in the garden.