Position – Thai lime trees enjoy plenty of sun, at least 6 hours every day. The best spot is an area that gets direct sunlight in the early morning or late afternoon. Thai limes to do not tolerate very cold temperatures well so ensure to give them warmth and sunlight.
Size – Thai limes can grow to a height of between 6 and 8 metres, with a width of 2 to 4 metres. Make sure give sufficient space for the tree to grow, at least 5 metres apart.
Soil Type – Well draining loamy acidic soil is ideal for the Thai lime. Their roots are easily prone to root rot so ensure that the soil has good drainage as they cannot grow in poor soil. A soil pH of 6 to 6.5 is best suited.
Mulch – Any organic matter will work well as a mulch. Straw is great for using a a mulch which will help keep the soil moist.
Watering – Watering is normally sufficient once per week. The soil should stay moist but not soggy as the Thai lime is prone to root rot. Do not water just because the soil surface looks dry. The rule of thumb to test the water in the soil is to stick your finger in the soil up to the second knuckle. If the soil is then dry it would need more watering.
Fertilizing – Thai limes enjoy fertilisers with a high nitrogen content. Slow release fertilisers work very well and uses very little effort to help maintain the nutrients for trees.
Pruning – Pruning is essential to keep the Thai lime tree small. Prune back the branches if they look weeping. Make sure to remove diseased or dead branches which are dark brown below the bark. Prune off any sprouts which are growing about 25 centimetres above the soil line.