https://www.reuters.com/article/us-afghanistan-poppies-farmer/afghan-farmers-stick-to-growing-opium-in-the-face-of-less-lucrative-options-idUSKBN1I1067
https://www.nytimes.com/2001/05/20/world/taliban-s-ban-on-poppy-a-success-us-aides-say.html They have indeed gone back and forth on that. But they did at one time have them eradicated starting in 2000.
https://www.nytimes.com/2001/06/13/world/taliban-s-eradication-of-poppies-is-convulsing-opium-market.html
https://afghanhindsight.wordpress.com/2015/05/23/the-talibans-opium-poppy-ban-in-20002001-lessons-from-history/