Uh... Warg? Might want to scale back on the hydroponics dome in the Invader; at best you'll be moving between racks of plants being grown hydroponically, in microgravity. Only the grav deck on the Jumpship has actual gravity. So, nope, no flowers, trees or grass to be seen inside the dropship, unless some wag painted it on a wall.<br/><br/>Sorry. In part, it's because trees and grass etc. take too much time to cultivate when simple green foods like lettuce are both faster to grow, and edible, in part it's because, like a dropship, Jumpships are Not equipped with TARDIS technology that makes them bigger on the inside; 95% of a jumpship's mass is taken up by the Jump Drive, after all, so space is at a premium.<br/><br/>Even a Warship has some 45% of its total mass be its 'Compact' Jump Core; the ability to tear a hole through Space and time, exist, momentarily, in two points at once as Space is folded like origami around a jumpship's Drive envelope, and then wink from existence in a blast of EM and Infrared Radiation and appear up to 30 Light ~years~ distant in the same blast of energy takes a lot of real estate in the half-kilometre long ships.<br/><br/>So, think less 'park' and more 'dozen rows of hydroponically-grown veggies, in next to zero-g'