Kerry also mentioned that the 7th Annual Great Garden and Landscaping Symposium is being held again this year at the The Equinox, a world class resort in Manchester VT April 23 - 24. For more info on the agenda and a full listing of all the nationally known speakers, go here.
For Virginia readers who can't make it to VT, the annual Historic Virginia Garden Week takes place April 17 - 25. The Arlington gardens on this year's tour are JUST up the street from my house but I have to work that day so I won't be able to attend.
(please note these are my personal recommendations and I receive no form of compensation for them.)