Avocados do grow well in Thailand. Obviously that would depend where you live. I have a couple of healthy seedlings growing well near Cham ni. Yesterday, I was at the Kok Kruat Plant Market.
Kok Kruat Plant Market is located on the highway no.2 in the area of Kok Kruat Sub-district, Muang Nakhon Ratchasima. It's around 20 km from Korat downtown. It's a huge plant market, plenty of plant nurseries selling, many kinds of plants and flowers. I bought 2 grafted Hass Avocado trees which means I should have fruit bearing in 2 to 3 years. I will take scions off the new grafted Hass avocados and graft them onto the existing seedlings thus shortening the time the seedlings, now newly grafted plants, will take to bear fruit.
Regards