young white pine bought at lowes this spring at about 4' with about a 24" root ball . and in the 3 months since weve had alot of rain and the main trunk has sprouted up near 24" very quickly and this morning i noticed that recent 24" quick trunk growth at tree top has become so supple it couldnt stand its own weight and bent right over vertical to the ground . so i was thinking give it a stake support / prune it / let it go ? its in very rich soil / full sun , and i lightly fertilized it with simple / basic fertilizer a month ago . and was well watered til past 3 weeks when ive let it go because weve been getting at least 2 decent rains per week .