Help with Wylde Flowers!

I found this game through recommendations here and absolutely love it! I’m just starting summer year 1 with one garden plot. The issue is I thought the trees were really cool because you don’t have to harvest and replant like crops, so I filled up the majority of my garden bed with trees and have like three plots left for crops and three compost bins.

Now it seems like every single person in town wants me to grow a large amount of crops for the summer festival and I have no freaking space for any of them. I have only 25 of 50 soil I need to craft a new garden plot and it’s so slow to accumulate despite religiously filling my bins daily. I feel like I’m going to ruin the town’s summer festival and everyone is already super bummed after grams just passed.

Is there any other way to get soil or speed up the bins? I worry that even if I speed the bin production up though I won’t have enough weeds to sustain it. TIA for any advice!