People probably already stated but you need altitude and certain conditions + 3 or 4 years for maturity. I really wanted to grow my own too instead of buying processed shit you have to destroy your nose with, but it just wasn't viable. Neither was trying to import leaves. You pay a cartel or you probably die doing something stupid.
I’ve imported leaves before. Several kilos at a time. Granted I’ve not done it in around 5 years or more but it used to be easy to do. I’m in the uk to tho. They have become harder to buy online or rather just much more expensive last time I checked and less varieties available. but I’m sure if you look around you can find a contact willing to ship them to you. They are not sent as coca leaves obviously and because the cocaine in the leaves is not detectable via drug testing kits they arrive perfectly fine. I’ve had a couple packages come with the “inspected for narcotics” sticker over it and finding bits of green powder everywhere in the box lol but everything was intact still. I used to buy the coca mega packs that also come with loads of other goodies like cereal bars, sweets some Vaseline style balm that all were infused with coca leaf extract and included cocaine.
I actually found it somewhat harder to get and buy the required chemicals but that’s also not too hard either as eBay exists.
I made tea with it and also did what you would expect any self respecting drug user would do.
Most amount of leaves I ever imported was jus under 5kg as each bag of tea bags was 1kg but each bag actually had about 900+ grams of powdered leaf in it as the weight included the tea bags. These were the cheapest bags available ( about $60 each) and I often got a mix of other more expensive supposedly higher quality powders and teabags often times it jus came in the mega pack and I’d top it up with the budget “trash bags” as they were called ( 1kg bags of the lower quality powdered leaf in 1000 tea bags)
Only got whole leaf once and it was a real pain to process and deal with if you want to make something out of it. So never bothered with that again. Might be harder to get whole leaf through customs too.