30 MASS. EXPERIMENT STATION BULLETIN 345 



HALESIA MONTIGOLA Mountain Silverbell 



While this plant becomes a large tree in its native mountains farther south, 

 in cold northern gardens it is usually seen as, or had best be pruned to, a large, 

 open, gray-barked, deciduous shrub. When so grown, the large clusters of 

 hanging, bell-shaped flowers in May, followed by dry, winged fruits, give it 

 definite garden value. Here is a plant for backs of large borders and edges of 

 woodlands. Var. rosea has pleasing, pale-rose flowers but, unfortunately, seems 

 to be less hardy in the North. 



HAMAMELIS MOLLIS Chinese Witch-Hazel 



Deciduous shrub or tree capable of greater ultimate height than either 

 H. vernalis or H. virginiana. Because of large, bright, spring-borne flowers it 

 has more claim to intimate garden use, but is not dependable in all locations 

 for a crop of regular annual bloom. 



HAMAMELIS VERNALIS OZARK WlTCH-HAZEL (VERNAL WlTCH-HAZEL) 



A medium-sized, stocky, upright, deciduous shrub which is indifferent as 

 to soil and able to withstand considerable shade. Though generally considered 

 to be a spring-blooming plant, its fragrant, not too showy, yellow or red (vari- 

 able with different plants) flowers may open during a warm period and carry 

 on at each warm interval until spring. Its free-suckering proclivities may be 

 thwarted by grafting on the roots of H. virginiana. A species for massing in 

 woodland planting or along roadsides. 



HAMAMELIS VIRGINIANA COMMON WlTCH-HAZEL 



Familiar, open, large, pleasant-leaved shrub of which isolated plants hide 

 away in wood edges to there disclose themselves only after the leaves have 

 fallen. From then on during warm periods until well into December, its 

 fragrant flowers expand their strap-shaped petals to cheer up an otherwise 

 desolate landscape. Therein lies the key to its garden value. 



Hawthorn — See Crataegus 



Heath — See Erica 



Heather — See Calluna, Erica, and Daboecia 



HEDERA HELIX var. BALTICA HaRDY ENGLISH IvT 



An outstandingly hardy, climbing form of a normally tender evergreen 

 vine, like its type in aspect except for smaller foliage. Satisfactory as a high 

 evergreen climber only when sheltered from winter sun and wind. The fruiting 

 shoots, which have less interesting foliage, may be propagated to produce a 

 bushy shrub. Such change to fruiting wood seldom comes before the limit 

 of supporting structure is reached. Rapidly climbing plants rarely flower. 



HEDERA HELIX var. CONGLOMERATA BuNCHLEAF ENGLISH IVY 



A slow-growing, relatively hardy, small-leaved, shrub-like, evergreen form 

 of the common Ivy, now popular in rock gardens. 



Hedera helix var. minima 



Another slow-growing form of the English Ivy for rock gardens. It has 

 erect stems and small, pointed leaves which turn bronze in winter. It usually 

 becomes spreading in habit through freezing back of growing tips. 



HELIANTHEMUM NUMMULARIUM COMMON SUN-RosE 



A subshrub usually met with in some one of its numerous garden forms. 

 The type shows both upright and spreading habit, but, because of tenderness 

 of top, it is usually but a few inches tall. When happy, it appears as a mat or 



