FX Luminaire used to put out a pretty good design book called Turbospecs II, which gave specific suggestions for fixtures and lamps, like how many for a particular plant of a particular size.
It was mostly geared for the Southwest, but you could transpose them if you knew the plants they talked about. The copy I have on hand has a 1999 publication date. Had a nice lighting terms glossary too. Not sure if it's available as a PDF or anything. It could use an update though.
Landscaper. Irrigator. Illuminator. Music lover. Coffee drinker.