Step 6: Organic gardener's dream
A crushed aspirin in water (one pill to one gallon) helps plants to fight infection and stay alive during traumatic plant experiences like transplanting, cutting, cloning, or zombie attacks. If your plants are dying in front of your eyes, it can be tempting to resort to extreme measures to rescue your little green friends with a water-soluble fertilizer. When stressed, however, plants can't really absorb all those delicious nitrates and phosphates. Dumping fertilizer on a dying plant is like giving a heart attack victim a multivitamin: not quite the ideal time for bioavailablility. Aspirin is the solution (pun!) for your mild flora emergency.
According to the exhaustive research I just performed on Wikipedia, salicylic acid can induce specific changes in root, stem, and leaf structure that create more robust plants. It can also help fruits and vegetables grow bigger and stronger. It will help your plants resist disease, insects, and unusually weak hailstorms.
Additionally, an aspirin solution will also help your cut flowers last longer in the vase so you can go nearly a full week before raking up the dead petals. Unless you're playing the "he loves me, he loves me not" game, in which case you should just count the petals in advance to determine your romantic status and let the aspirin keep the bouquet pretty.