Netherlands-Decriminalized. Cultivation Illegal except for personal use.
No, unfortunately not true anymore since 2011. Basically you can grow 5 plants in soil in a garden if no neighbors complain, but as soon as you put a lamp above it (OR use a meter, OR grow hydro style, or give nutes) it is 100% illegal. The cops, energy companies, housing, and worst, the IRS raid people all day every day here. They destroy all growing gear, plants, and investigate how much you've grown and if that's more than a little bit then they tax and fine you for profits at an unrealistic street price. THAT is how "legal" things are in the Netherlands.
And to OP, the only thing legal in this context in the Netherlands, including Amsterdam, is selling up to 5 gram per day per person in a coffeeshop that has a permit. They are NOT allow to grow, and they are NOT allowed to buy weed at what we call the backdoor (basically from suppliers, for the law considered organized criminals - mobsters...). That last part, coffeeshops not being able to buy weed legally (while they are allowed to store only 500gram) is THE main point of the ongoing debate here. Currently many counties are working on plans to grow their own weed, they need to submit them to the minister of justice who will then reshape (rape would be a better word) our policy once more. In any case, it's not getting better.
It was, and won't on the short term be legalized in The Netherlands. Not until the US and other major players in the UN decide to change several agreements that our politicians are afraid of breaking. We do have an exception clause in that UN agreement, which comes down to not prosecuting growers wth 5 plants, but with the 2011 changes/limitations it's basically illegal.
It never was legal here either, all myth. We simply just don't accept the law on this issue (and because our justice system is 'weak'... it's not like you risk going to jail like in some countries... wooops, no offense! US nr. 1
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Edit: since myths are hard to bust sometimes, if you think I am exaggerating, google for the word "hennepkwekerij". WARNING, MAY CONTAIN SHOCKING IMAGES. Hennep = hemp. Only the police and media refers to a weed grow as "hennepkwekerij"...