Did you know that peanuts grow in the ground and not on trees like most other nuts? This is because they are not a nut; they are a legume.
There are four main varieties of peanuts grown commercially around the world. These are: Virginia, Runner, Spanish and Valencia.
Peanuts are generally planted in the spring and summer months in Australia because they are susceptible to destruction by frost. It takes about five months for a peanut plant to mature.
The peanut seed is planted a few centimeters below the soil. It is important that the soil is loosely packed, has good drainage and is rich in calcium. Calcium is generally added by the farmer in the form of gypsum.
Peanut seeds break the soil about 10 days after planting and grow into green-leafed plants about 45 cm tall.
Then about 30-40 days later the plant will bloom producing small, bright, yellow flowers.
These flowers self-pollinate, and the fertilised plant forms several stalks or 'pegs' which curve downward to grow into the soil. After about a week in the soil the 'pegs' swell, developing into pods and it takes about another 9-10 weeks to mature before harvesting can occur.
The plants are ready to harvest in late summer or early autumn, when the foliage begins to yellow. Once harvested the peanuts undergo a drying process for several days before they are shelled and roasted.