Growing turmeric in temperate (Mediteranean) climate is not easy if you don't have a greenhouse like us. Turmeric needs 7~9months to grow in warm weather to produce good decent roots to harvest. Only one plant gave us a small harvest when it died last winter. I am trying again to grow turmeric this year by not repeating mistakes we did previous year in Adelaide. During warm season, turmeric prefer to grow in partial shade. Growth of turmeric will be stunted or the plants died after several days of receiving harsh light from the sun during Adelaide summer. Turmeric grows wild in the dense South-East Asia tropical forest under big trees which shows having a character of thriving in partial shade. Turmeric relies on other big plant to provide some shade.
Have you ever wonder when you have limited space what you can grow under the trellis? Many root crops like carrot, turnip or garlic need full sun to grow fat roots but turmeric is one of the exception. In our garden, under bittergourd and bean plants, turmeric managed to grow well during summer. I also found many turmeric that come out from compost which is growing under tomatoes and peppers. These turmeric plants grow very fast in the shadow of these two plants compared to turmeric plants that received full sun in summer. Turmeric is said to repel black ants. Black ants can host aphids which usually like to attack tomato, eggplants and pepper plants. Turmeric can be good companion for eggplants, peppers and tomatoes to reduce pest attack and these plants provide some shade for turmeric.
In winter, turmeric might need more sun for warmth. I will moved this container that have two turmeric plants near our house brick wall to reflect some heat during the night which recieved full morning sun. Last year, the last growing turmeric (dormant) survived until middle of winter in the open garden.
What is "Companion Week" and Seed Give-Away visit this post for more information.
Thank you for linking.