If you want to buy local fruits and vegetables in Tenerife, it is best to head to one of the farmer's markets (mercado del agricultor), where you will find locally grown produce, with much more taste than what you can find in the supermarkets.
On alternate Thursdays of each month from 9:00 a.m. to 1:00 p.m. the Farmer's Market will be set up on the Los Cristianos promenade in front of the Plaza de La Pescadora.
What you will find at Arona's Farmer's Market (Mercado del Agricultor de Arona - Valle San Lorenzo): fruits (papaya, banana, oranges, mango - locally grown in Tenerife), vegetables, flowers, eggs, cheese, wines, liquors, mojos - typical Canarian sauces, honey, canned products and also some organic products.
If you have the chance to visit one of the local farmer's markets in Tenerife, we strongly recommend you do so. Try the local fruit that is in season at that time and also other Canarian delicacies that you can find, and you won't be disappointed.
Depending on where you are staying, you can also go to Adeje Farmers' Market.