I can't imagine using a grow light system inside a small van space, unless it were very very tiny. Unless the technology has changed considerably, the heat generated by specialized grow lights and the transformers is considerable, and then there is the electricity to consider. If you are working on a very tiny garden, like a few herbs and a flower, then a fluorescent on a tiny timer would work, or even one with a daylight bulb. You'd have to dedicate some surface space to it, or maybe a small shelf system in your van or RV, obviously easier in an RV or converted trailer than in a van. I've really thought about this one, and experimented with it in Scotty, but land is land. Your best and easiest bet, I agree, is to find long term parking during the growing season and a community garden. <br><br>If the place you park is amenable, you can also have plenty of pots outside your living space, as long as you keep them neatly. You can also use double lined garbage bags well-pierced on the bottom and full of compost, dirt, and peat moss, as a growth medium. White ones reflect heat if you are in hot areas, and/or you can cover the bag with a rug or other discarded material. Even one of those fake green plastic grass rugs! This has the added benefit of acting as mulch and helping to keep in moisture. Slash the top of the bag as it sits on the ground and plant your little seedlings in, gathering the cloth around the bag opening. You add water and compost tea thru the opening (judiciously). This is great for tomatoes or other vining stuff if you have something for them to climb on nearby. You can conceal the 'bagginess' by placing some nicer pots in front of it. And a drip system would do really well for this, but they are very expensive and take maintenance, unless you are clever enough to construct homemade. Most good growing references will give you the length of time that your plant will take to mature, as will the seed packet if you are growing from seed. That way you can have an idea of how long you'll need to sit still with your garden! This is obviously not a method for stealth. LOL!!<br><br>I wouldn't advise a planter box on the roof of a regular RV, again as I said before due to weight. A clear cover over will prevent spillage but will also fry your roots. I don't know about converted trailers or vans with ladder racks, but I guess it depends on what the payload of your rack is. it would probably do very well on a converted bus with a platform above it. A good reference to consult, I think, is Bartholemew's Square Foot Gardening. He has a section on small square foot boxes up on supports, and I think he talks about approximate weights. Another resource is your local Dept of Ag Master Gardener. They may not know, but they should know how to find out.<br><br>I have a dream about putting a bubble on the top of Josephine someday, with plexi panels in the roof of it, and hooks for shade cloth, and a nice growing garden right there in the top of the van! To drreeeeeeem the imposssibilblle dreeeeeeemmmmm...... Ah, I can smell the southern jasmine....