I live in Singapore. Tomatoes in Southeast Asia are terrible. Bland, white, mealy balls. It would be so much nicer to grow my own. (I grew up in Pennsylvania where it seemed effortless)
I'm on my second set of trials. My first try was a couple years ago. I planted a bunch of species in containers, fertilized the hell out of them [oops], and was amazed to see 5' high tomato shrubs. Not so happy to find no tomatoes, and only a few (failed) blossoms.
This time around we built some large self-watering containers and planted a mix of heirloom species I bought from the USA. I picked the "southern states" mix of seeds, hoping they'd be more amenable to Singapore's temperature:
It's always this temperature, the only thing that varies is whether it rains or not. It's pretty humid (example, right now it's 74%) most of the time.
Trial two went marginally better. I just returned from three weeks in Italy and found that a species "[url=https://rareseeds.com/seeds/Tomatoes-Yellow/Egg-Yolk]Egg Yolk[/url]" is producing some amount of fruit. The tomatoes that have ripened have a reasonably fruity flavor, too, which In find delightful.
Egg Yolk Tomato
The other tomatoes are in various states of disrepair. One species (the markers rinsed off in the rain!) is nearly as big as my egg yolk, but produces no fruit, no blossoms. Other species aren't bushing as large, and have withered leaves, etc.
I also planted a tomatillo heirloom. Despite being eaten alive by god-knows-what, it has produced a lot of tiny tomatillos. And I mean TINY. They are the diameter of an M&M! The nannies at my house are from Myanamar and they recognized it as some sort of weed. (ha)
Something came for Tomatillo Dinner
So my question is: what species of tomatoes are most likely to do ok in this consistent climate?
Also, I'm wondering if I should be planting these tomatoes in nastier/less luxurious soil so that they don't bush so much, and then giving them fertilizer or supplements that will encourage more fruiting/blossoming, and less growing?
I presume "blossom set" spray is useless here -- I understand this is only for blossoms that don't set during cold temperatures, something I don't experience.
Any other advice/recommendations to try? For interest, we are mixing up our soil with biochar, as we heard it can help temperate plants grow in tropical environments.
Wishing I was back in Italy