Farming tools used in growing your plants can be found by killing local Farmers. They can also be bought from the several Farming Shops located around RuneScape:
Alice's Farming Shop west of Port Phasmatys.
Sarah's Farming Shop south of Falador, north of Port Sarim, and west of Draynor Village.
Richard's Farming Shop north of Ardougne.
Vanessa's Farming Shop in Catherby.
Useful Farming Tools
Picture Item Use
Rake Clears out any unwanted weeds on a Farming plot.
Seed Dibber Pokes holes in the soil to plant the seeds.
Secateurs Trims diseased or dead branches from trees and shrubs.
Magic Secateurs Gives a 10% better harvest of hops, vegetables, and herbs.
Spade Harvests your crops.
Gardening Trowel Used with a Planting Pot to create a hole for your Tree seed.
Watering Can (8) For watering your crops.
Planting Pot Begins growing your Tree seed into a sapling until it can be planted in a Tree plot.
Compost Bucket Buckets filled with compost that treat the soil before the seeds are planted in any plot.
Vegetable Sack Holds up to 10 vegetables.
Fruit Basket Holds up to 5 fruits.
Plant Cure Cures crops if they become diseased.
Gardening Boots None
Tool-Keeping Leprechauns
These jolly-green Leprechauns can be found near Farming patches, and will keep any gardening supplies and tools you give to them. So you no longer need to store your tools in your bank, as they will be kept safe with the Leprechaun, and whenever you need one of your tools, it will be right there for you. You can get your tools back from any gardening Leprechaun in RuneScape.