Secondary Conservation List of Non-Native Species

Secondary Conservation List of non-native species

The plants listed in the "Secondary List" are those species, both native to North America outside of Massachusetts as well as introduced from other areas, that have few insect and/or disease problems, are NOT invasive, and may have wildlife value. They might be considered for ue in less sensitive areas within the buffer zone.

 

Buffer Zone Trees and Shrubs

Soil moisture:

W = wet, D = dry, M = moist

Sun:

SU = sun, SH = shade, PS = part shade

Symbols:

! = possible pests, # = stoloniferous, OC = on center, c = caliper, ST = salt tolerant, WL = wildlife value

 

Shrubs, Low

Scientific Name	Commmon Name	W	M	D	SU	PS	SH	H x W	Opt. Size	Spacing
Cephalotaxus harringtonia	Japanese Plum Yew		X	X	X			5 x 10	2 G	8' OC
Microbiota decussata	Russian Arborvitae		X	X	X	X		1 x 6	1-2 G	4' OC
# Itea virginica	Virginia sweetspice		X		X	X		3 x 6	1-2 G	4' OC
Pieris floribunda	Mountain pieris		X		X	X		4 x 4	1-2 G	3' OC

 

Shrubs, Medium

Scientific Name	Commmon Name	W	M	D	SU	PS	SH	H x W	Opt. Size	Spacing
Calycanthus florida WL	Carolina allspice		X	X	X	X		9 x 10	2 G	6' OC
Chionanthus virginicus	Fringetree		X	X	X			12 x 15	2-5 G	8' OC
Fothergilla gardenia	Dwarf fothergilla		X	X	X			4 x 4	2 G	3' OC
Fothergilla major	Large fothergilla		X	X	X			8 x 8	2 G	6' OC
! Ilex x meserveae WL	Meserve hybrid holly		X		X	X		10 x 10	2 G	6' OC
Hamamelis x intermedia	Hybrid witch hazel		X		X	X		10 x 15	2 G	6' OC
Hamamelis mollis	Chinese witch hazel		X		X	X		10 x 15	2 G	8' OC
Hamamelis vernalis	Vernal witch hazel		X		X	X		10 x 15	2 G	8' OC
Hydrangea macrophylla	Bigleaf hydrangea		X		X	X		6 x 6	2 G	5' OC
Hydrangea quercifolia	Oakleaf hydrangea		X		X	X		6 x 6	2 G	5' OC
Physocarpus opulifolius	Ninebark		X	X	X	X		8 x 8	2 G	6' OC
Syringa meyeri	Meyer lilac		X		X			8 x 8	2 G	6' OC
Syringa patula ‘Miss Kim'	Miss Kim Korean lilac		X		X			8 x 8	2 G	6' OC

 

Shrubs, Tall

Scientific Name	Commmon Name	W	M	D	SU	PS	SH	H x W	Opt. Size	Spacing
Aesculus parviflora WL	Bottlebrush buckeye		X	X	X	X		12 x 25	2-5 G	10' OC
Cotinus coggygria	Smokebush		X	X	X			15 x 15	2 G	8' OC
Enkianthus campanulatus	Redvein enkianthus		X		X	X		15 x 8	2-5 G	5' OC
Hydrangea paniculata	Panicle hydrangea		X	X	X	X		15 x 10	2 G	5' OC
Viburnum plicatum var. tomentosum WL	Doublefile viburnum		X		X			12 x 12	2-5 G	8' OC
Viburnum sargentii WL	Sargent viburnum		X	X	X	X		15 x 15	2-5 G	10' OC
Viburnum sieboldii WL	Siebold viburnum		X	X	X	X		20 x 15	2-5 G	10' OC
Viburnum trilobum WL	American cranberrybush		X		X	X		12 x 10	2 G	8' OC

 

Trees, Small (Understory)

Scientific Name	Commmon Name	W	M	D	SU	PS	SH	H x W	Opt. Size	Spacing
Acer buergerianu	Trident maple		X	X	X	X		25 x 30	1.5"-2" c	20' OC
Acer campestre	Hedge maple		X	X	X	X		30 x 35	1.5"-2" c	20' OC
Acer griseum	Paperbark maple		X	X	X	X		30 x 20	1.5"-2" c	15' OC
Acer triflorum	Three-flower maple		X	X	X			30 x 30	1.5"-2" c	20' OC
Cornus kousa WL	Kousa dogwood		X	X	X	X		30 x 30	1.5"-2" c	20' OC
Cornus mas WL	Corneliancherry dogwood		X	X	X	X		25 x 20	1.5"-2" c	15' OC
Cotinus obovatus	American smoketree		X	X	X	X		30 x 30	5-7 G	20' OC
Halsia tetrapta	Carolina silverbell		X	X	X	X		30 x 35	1.5"-2" c	20' OC
Ilex pedunculosa WL	Longstalk holly		X		X	X		25 x 20	5'-6'	15' OC
Ptelea trifoliate	Hop tree		X		X	X	X	15 x 15	1.5"-2" c	12' OC
Magnolia x loeberni	Loebner hybrid magnolia		X					25 x 25	5 G	20' OC
Magnolia stellata	Star magnolia		X		X			25 x 15	5 G	12' OC
Malus ‘Donald Wyman’ WL	Disease resistant crabapples		X	X	X			20 x 20	1.5"-2" c	15' OC
Styrax japonicus	Japanese styrax		X		X	X		20 x 20	1.5"-2" c	15' OC
Syringa reticulata	Japanese tree lilac		X	X	X			30 x 25	5-7 G	20' OC

 

Trees, Tall (Canopy)

Scientific Name	Commmon Name	W	M	D	SU	PS	SH	H x W	Opt. Size	Spacing
Abies concolor WL	Concolor fir		X	X	X			75 x 40	5'-8'	35' OC
Aesculus x carnea WL	Red horsechestnut		X	X	X			40 x 30	1.5"-2" c	20' OC
Carpinus betulus	European hornbeam		X	X	X	X		50 x 40	1.5"-2" c	30' OC
Cercidiphyllum japonicum	Katsura		X		X	X		75 x 30	1.5"-2" c	20' OC
Chamaecyparis obtusa	Hinoki falsecypress		X	X	X	X		50 x 20	5'-8'	15' OC
Chamaecyparis pisifera ST	Sawara falsecypress		X	X	X			70 x 25	5'-8'	20' OC
Cladrastis kentuckea	American yellowwood		X		X	X		50 x 40	1.5"-2" c	35' OC
Ginkgo biloba ST	Ginkgo		X	X	X			70 x 40	1.5"-2" c	35' OC
Liquidambar styraciflua	American sweetgum		X	X	X			60 x 40	1.5"-2" c	35' OC
Metasequoia glyptostroboides	Dawn redwood	X	X	X	X			75 x 30	5'-8'	25' OC
Oxydendrum arboretum	Sourwood		X		X	X		40 x 20	1.5"-2" c	15' OC
! Pinus cembra WL	Swiss stone pine		X	X	X			40 x 20	5'-8'	15' OC
! Pinus parviflora ST, WL	Japanese white pine		X	X	X			50 x 25	5'-8'	20' OC
Sciadopitys verticillata	Japanese umbrella pine		X	X	X			60 x 20	5'-8'	15' OC
Stewartia pseudocamellia	Japanese stewartia		X		X	X		40 x 20	1.5"-2" c	15' OC
Taxodium ascendens	Pond cypress	X	X		X			80 x 20	5'-8'	15' OC
Taxodium distichum	Baldcypress	X	X		X			60 x 30	5'-8'	25' OC
Ulmus parvifolia	Lacebark elm		X	X	X			50 x 40	1.5"-2" c	35' OC
Xanthocyparis nootkatensis WL	Alaskan falsecypress		X	X	X			60 x 30	5'-8'	25' OC