Richters has the seeds I bought some last season and they grew great! They like it cool and moist so in your climate keep them in the shade. Even way up here in my zone I grew them in the shade. They also grew under lights really well.

And yes culantro, not cilantro.

Trade Winds Fruit has Eryngium foetidum - Culantro,if you can't get it in a trade FYI.

$2.00

500 seeds per pack. A tropical perennial or temperate annual, the
aromatic culantro plant is used extensively in many regional Asian
cuisines. Spicy-like flavor, a bit akin to cilantro, with which it is
often confused.