Collecting flowers is slowly eats available slots as different flowers does not stack (which is normal), and especially in early game or with rare flower-distribution you can hit the limits of inventory while you explore the world.

It would be good if we can get a Forestry backpack to store flowers automagically. It should available only for worldgen flowers or both. Recommended recipe is add two random petal (or, if you want to harden it, a mana petal) to the normal forestry backpack recipe.

Call it Botanist's Backpack. That name isn't taken yet.

Good idea, I'd prefer normal petals, as all other backpacks are relatively easy to get, as to upgrading, there is already a preset design for upgraded backpacks that can easily be used for the botanist one.