What about Taxodium mucronatum (montezuma cypress). There are some growing in Las Cruces and they grow fast. At least they do over here in Texas.

I got 2 Golden Rain trees from the Arbor Day Society about 8 or 10 years ago, & I have a *bunch* of seedlings. It's still a little hot to transplant them, but I'll be happy to dig some up in early October & send them to you for postage if you still want them then. They're very pretty trees, they have panacles of sunny yellow flowers in spring, followed by bunches of sort of translucent yellow seed pods that look a little like peppers! just let me know.

pix are worth a bazillion more of your nice words ... i cant understand a plant that remains only 3 feet wide.. but will get to 20 feet ... very limited selection ... annual growth is a function of first.. getting established.. and then genetics ... fert does not and will not change genetics.. and fertilizing a plant that frankly.. will never need fert.. is not the way to make them grow faster or better ... you need to start thinking in terms of garden or tree years ... rather than the wish for instant gratification of making neighbors disappear ... for that you need a pergola ... or some such ... ken https://www.google.com/search?q=pergola&source=lnms&tbm=isch&sa=X&ei=CuiSVe3pAYeWNt2vgvgH&ved=0CAcQ_AUoAQ&biw=874&bih=745&dpr=0.9

I have a poplar plantation and would like to point up some of the unexpected virtues of these underrated trees. My wood was initially planted for matches, only to be totally neglected when the market diminished in the 70s. Since then, the hybrid poplars have grown on but, because of the small canopy and high light levels (planted on 6m centres), colonies of english oak, hawthorn, holm oaks and prunus spinosa have appeared, amongst the brambles. The trees are now some 70 odd years old and will need felling over the next few decades but, in the meantime, the roots have not been terribly greedy, they have not suckered or seeded and the wood has a most wonderful cathedral aspect which comes from very tall trees with light levels high enough to sustain grasses and perennials. As my small 5 acre plantation is surrounded by land-drains, I have planted many shrubby willows - the stem colours are remarkable and I use the osiers for basketry. I was initially sceptical, assuming poplar was a sort of 'trash tree' but have, in fact, found it to make decent firewood and very straight-grained timber for milling - it takes a stain wonderfully well, splits perfectly and has some good structural applications. As with all broadleaves, the faster they grow, the shorter their lifespan (although this doesn't apply to conifers)...and hybrid poplars will put on enough growth to harvest on a 15 year rotation. Add in some hazel, redwoods (they are fast too) and sweet chestnut and I feel I have a good basis for a small wood with diversity and a true wooded feel but without the gloom and non-existent ground layer associated with conifer and beechwoods. Can I also put in a plea for some of those smaller.modest trees such as sorbus, malus, amelanchiers, halesias. dogwoods, viburnums etc. Growing an understorey, as well as planting the more majestic forest trees, really does create a feeling of density, abundance and most of all, several seasons of interest, with blossom, fruits and bark.