Table 3. Calipers of trees (inches) grown the first 2 years at Root’s Nursery in 9-cm (3.5-in.) shelters and at Nittany Trees in 9- and 18-cm (3.5- and 7-in.) shelters, compared to trees grown all 4 years without shelters (percentage of control).

Species, cultivar	Years:	Inches					Percent
Species, cultivar	Years:	0	1	2	3	4	1	2	3	4
Root’s Nursery, 9 cm
Acer griseum				0.4	0.6	0.9		60	66	81
Cercis canadensis				0.7	1.4	1.9		72	91	95
Cornus ‘Celestial’				0.7	1.1	1.2		77	86	86
Malus ‘Adirondack’				0.5	0.8	1.0		66	82	90
Magnolia ‘Merrill’				0.7	1.0	1.3		97	88	118
Magnolia stełlata				0.5	1.0	1.4		100	106	114
Syringa’Summer Snow’				0.6	0.9	1.2		61	65	65
Nittany Trees, 9 cm
Carpinus caroliniana		0.2	0.1	0.4	0.5^{^*}		64	71	56
Cornus ‘Celestial’		0.4	0.4	0.5	0.6^{^*}		104	64	69
Cornus ‘Constellation’		0.4	0.4	0.6	0.7^{^*}		92	58	63
Magnolia stełlata		0.2	0.2	0.4	0.3^{^*}		100	73	54
Prunus serrulata ‘Kwanzan’		0.4	0.4	0.9	1.3		104	67	81
Prunus subhirtella autumnalis		0.3	0.3	0.8	1.3		96	65	87
Nittany Trees, 18 cm
Carpinus caroliniana		0.2	0.2	0.6	0.8^{^*}		83	98	88
Cornus ‘Celestial’		0.4	0.4	0.6	0.8		112	80	83
Cornus ‘Constellation’		0.4	0.4	0.8	0.9		102	76	80
Magnolia stełlata		0.2	0.2	0.5	0.5^{^*}		94	105	85
Prunus serrulata ‘Kwanzan’		0.4	0.4	1.0	1.5		103	79	96
Prunus subhirtella autumnalis		0.3	0.3	0.9	1.4		104	70	90

↵* Some trees exhibited dieback.
↵Metric equivalents: 1 ft = 30.5 cm.