Water your seeds when you plant them so they start germinating immediately! Alternatively, forget to water them and say you'll do it later, then it will eventually rain and technically you will have watered them.
Forget to clear the leaves out of your beds in the fall. Then when spring comes around, they will prevent weeds from growing. Ideally you would have chopped up the leaves and put them back in the beds to decompose faster, but come on now. We know how this goes.
People will say seeds are only viable for a few years, but you can actually just keep planting seeds from five, ten, even fifteen years ago and honestly they'll usually sprout. Seeds are kinda built like that. As long as you didn't get them moldy you're fine. Don't throw out a decent packet of seeds without at least testing to see if any germinate! You can sprinkle some on a wet paper towel and put it in a baggie to see how many germinate and then you have a germination rate so you can plant accordingly. Let's say you do that and half of them sprout. Now you know to sow twice as many wherever you're planting them.
Don't buy miraclegro. It's garbage. Don't buy soil laced with it either.
If you can't grow in the dirt or make your own compost or you need bagged soil for some other reason (no judgement, I use it plenty in addition to other methods), get something that has all the dead, rotting matter listed on the side. It'll be like chicken poop and shells and moss and some lightweight rocks like vermiculite and it'll be great. Probably has some woods chips in it but you'll be good.
Write down what you planted because it's not what you planned originally.
