And green the landscape certainly is. “Some of the trees and plants were already in the garden when I bought the house, but I added travellers’ palm (Ravenala Madagascariensis) and Carpentaria palms (Carpentaria acuminata) to create a more exotic Covington’s Nursery & Landscape Co. is hosting a free workshop on vegetable gardening 11 a.m. Saturday at 5518 President George Bush Highway. Staff