Miwa, I NEVER TRIM, Unless I Have To, Although Sometimes I Top, But Not Because I Have To. I have Found That The Weed I Have Grown, Seems To Do Best, Just The Way God Intended It To Grow, No Matter What Shape, Tall, Bushy, Tall And Bushy, Sideways, I Have Seen Most Of It All, I Believe. Sometimes I Take Off The Lower Branches If They Get Bent Or Damaged, And Have Found That Taking Off Lower Branches, Makes It Easier To Water, With The Way I Do It. But I Only Take The Bottom Branches Off, If They Break, Or Something, Or A Crazy Mood Strikes!!! I Usually Just Leave Them Be. It Has Not Failed Me Thus Far. I Have Tried Super Cropping,Topping, You Name, I Have Probably Tried It At Least Once. And What Through Empirical Evidence I have Found, From The Same Seeds And Genetics, NO NOTICEABLE DIFFERENCE IN WEIGHT AT THE END, At Least Not Enough To Go And Try And Transform Into A Different Shape Every Year, Cause I'll Get More, Or It Will Be Stronger. Plants That Are Not Topped Or Super Cropped Tend To Have Larger Buds, the Opposite So For The Topped Super Cropped Ones. As For PURPLE HAZE, The Last REAL Purple Haze I Saw Was Way Back In 84-85, Cannot Remember For Sure. I Do Know It Has Big Sur Holy Weed In It, And I Believe(NOT SURE) Some Oaxcan And Maybe Colombian??? I Am Almost Certain That I Have The Genetics Correct, But It Has Been Awhile!!! And Yes As TRUE Sativas, They Will Get TALL, Like If OUTDOORS In Full Sun, I Would Say At Least 18-20 FT, NO BS. So Good Luck With That, If This Is The REAL DEAL PURPLE HAZE, Your Gonna Be Tying,Bending And Topping All Summer, And If It Is Not The REAL, You May Be Anyways!!!! Take Care My Friend. SINCERELY, JAMESTHEGREEN.