Down and dirty herb farming

Herb farming is a solid money maker because every harvest provides profit.

You don't strictly "need" all these things, but they make it easier if you're serious about herb farming for cash. I'm hoping you have the tool leprechaun filled with farming tools (rake, spade, seed dibbler, buckets).

1. Supercompost

2. Magic secateurs (Fairytale Pt 1)

3. Access to My Arm's herb patch (My Arm's Big Adventure)

4. Amulet of nature bound to an herb patch

5. Teleports to 5 herb patches 

6. Money to buy seeds or 38 thieving for master farmers

Get a hold of a bunch of pineapples for making supercompost. There's other stuff, but pineapples are the easiest and cheapest to get. Buy from GE, Arhein in Catherby (40 per day), Grand Tree shops (2 shops 10 each) or get free from Karamja, Dell Monti (KAD gloves 3) and farmed pineapple bush, then fill up all 4 compost bins. It takes about an hour for the fruit to rot.

Get your seeds. teleports, nature ammy and farming gear. Bind your nature ammy to the last patch you plant so you can get an idea of when your herbs are done growing. Remember to wear the ammy or you won't get any messages about it being grown/diseased. If you're the type who'd rather hang out near your herbs, bind the ammy to Fally or Port Phas patches and hang out in Catherby/Ardy since the latter are very close to each other. My Arm will watch over your herbs at his spot, so no worries about that. The herbs take about 70 minutes to grow, though give them 90 mins - 2 hours to be sure, especially if you don't have a nature ammy to help. 

Your plants will die at some point. If you catch the disease early, cure it and maybe keep an eye on that patch (unless it bound to the ammy). It seems like a huge deal when an herb dies, moreso with the high priced ones like snapdragons, ranarrs and dwarf weeds. Death happens. Keep in mind that an average harvest (5 herbs) will pay for the seed and earn a profit. For example, ranarr seeds cost 31k and herbs sell for 8,800 gp at mid which means you only need 4 herbs per harvest to pay for the seed planted. Look at the big picture of your farming rather than at each herb run for your profit/loss.