We also encourage gardening.

The mulch, sold in garden supply stores, has a chocolate scent that is appetizing to some animals.Chemicals used on lawns and gardens, such as fertilizer and plant food, can be easily accessible and fatal to a pet allowed in the yard unsupervised.De-icing salts used to melt snow and ice are paw irritants that can be poisonous if licked off.

I've been searching on Loopnet for garden buildings in the 3-4 mil range. 

I don't know anything on large units but I found thishttp://www.loopnet.com/California/Los-Angeles_Apartment-Buildings-For-Sale/$2,695,000 / 15,278 SF / 22 units6.30% cap rate / Multifamily / Garden/Low-RiseThanks, Richard C :D

This is considered a 12 unit, garden style apartment.

I would think putting 10 houses on 1 acre and building a type of garden style community would be quite attractive and extremely profitable.

Your HOA will also take care of the grounds by hiring landscapers to cut the grass, maintain gardens, and trim bushes.What is the cost overlay on a property  HOA vs outside maintenance? 

The valve was attached to a 1 foot piece of PEX which went to an 90 degree elbow, then another foot of PEX that ended in a T with a 6" PEX stub on either side, each ending in a plug.We attached them each to a garden hose (around 40psi if I remember right), filled them to capacity, got as much air as possible out, then closed the valve to retain pressure.

My personal residence gardener I've had for 15 years said he would do it for free.

A garden hose and some acetone is all you need.