i have set up a 'quest farm' with some of each tree and flower that i will not harvest ... fortunately they dont go to waste .. so when i need them i can harvest for the current quest ..
i also did 9x plots of each crop that might be needed ..keep them watered, fertilized and harvest and replace before they go bad ... hope i can keep it up
I did exactly the same thing, and it helped me out of what could have been a long wait with just my third quest