The Montecito Board of Architectural Review on Thursday got a first look at conceptual plans for Ganna Walska Lotusland, a roughly 37-acre botanical garden on Ashley Road in Montecito. The garden often simply known as Lotusland is eyeing extensive renovations under its five-year phased master plan, which includes a new underground catchment tank and reservoir that will collect stormwater runoff before filtering and storing it. Other improvement…