Try as you might, those weeds are survivors.
They're integrated into the soil of your imagination. Germinating while you're plotting. They don't need water or fertilizer; minding or tending. All they need is you focused on making the garden bloom, clicking out the word-count, sentences flowing, scenes growing, climaxes building, chapters swelling, denouements wrapping.
When you're done, and surveying the fields of your creation, you might not see them. You might not be aware that in midst of the herbs and flowers you meant to cultivate, are the weeds of themes that are intrinsically part of the way you look at life.
It might take a reviewer to point them out.
Once you spot those weeds, raise a glass to them. Now you see the enduring power of nature.