ONTARIO ROCK GARDEN SOCIETY
Germination guide H1
Genus	Species	Germination	Remarks
Haberlea	all species	A
Haberlea	rhodopensis	A *	tiny shallow roots - seedling must be ensured constant moisture by enclosing pot in plastic bag
Hackelia	sp.	.	.
Hacquetia	epipactis	! L
Halenia	corniculata	.
Haleria	corniculata	A
Halesia	carolina	C *	pretreat with sulphuric acid CAUTION: THIS CAN BE A DANGEROUS PROCEDURE
Halesia	monticola	D *	ditto
Haloragis	erecta 'Wellington Bronze'	H 2 6	.
Hamamelis	'Jelena'	D
Hamamelis	x intermedia 'Jelena'	D
Hamamelis	x intermedia 'Arnold Promise'	D
Hardenbergia	violacea	A 6 7
Hebe	'Youngii'	! L
Hebe	perfoliata	.
Hedysarum	boreale ssp. mackenzii	B 1 6 7 *	protect from damping off, plant in deep pot, does not transplant well
Hedysarum	alpinum	B 1 6 7 *	plant in deep pot
Helenium	autumnale	B	.
Helenium	autumnale 'Moorheim Beauty'	B
Helenium	autumnale 'Moorheimis'	B
Helenium	bigelovii	A
Helenium	hoopesii	A
Helenium	montanum	.
Helenium	sp.
Helianthemum	'Raspberry Ripple'	A
Helianthemum	aff. alpestre	F
Helianthemum	appeninum 'Roseum'	F
Helianthemum	canum	A
Helianthemum	canum ssp. balcanum	A
Helianthemum	nummularium	D
Helianthemum	nummularium ssp. nummularium	D
Helianthemum	oelandicum ssp. alpestre	D
Helianthemum	sp.	A
Helianthus	divaricatus	A
Helianthus	salicifolius	A
Helianthus	sp.	A
Helichrysum	chionophilum	!
Helichrysum	milfordiae	try A
Helichrysum	petiolare	A
Helichrysum	plicatum ssp. plicatum	! A
Helichrysum	sessilioides	.
Helichrysum	bracteatum	A 2
Helichrysum	sp.	A
Helichrysum	thianschanicum	A
Helictotrichon	sempervirens	! E
Heliotropium	'Marine'	A
Helleborus	Westerfisk'	! D 7
Helleborus	all species	!	short viability
Helleborus	argutifolius	! D 7	dry storage destroys seed
Helleborus	argutifolius x sternii	! D 7	ditto
Helleborus	foetidus	! D 7	.
Helleborus	niger	! D 7	dry storage destroys seed
Helleborus	niger 'Potter's Wheel'	! D 7	ditto
Helleborus	orientalis	! D 7	.
Helleborus	orientalis 'Rainforest Mist'	! D 7
Helleborus	orientalis ssp. guttatus	! D 7	dry storage destroys seed
Helleborus	purpurascens	! D 7	.
Helleborus	sp.	! D 7
Helleborus	sternii Blackthorn Group	! D 7
Helleborus	viridis	! D 7
Helleborus	viridis ssp. occidentalis	! D 7
Helleborus	x hybridus	! D 7
Helleborus	x hybridus 'Party Dress'	! D 7
Helleborus	x hybridus 'Picotee'	! D 7
Helleborus	x hybridus ex ballardiae	! D 7
Hemerocallis	'Kittheynchen' ?	A
Hemerocallis	'Little Cherub'	A
Hemerocallis	Stella de Oro'	A
Hemerocallis	hybrid	A
Hemerocallis	lilioasphodelus	F
Hemerocallis	middendorffii	F
Hemerocallis	minor	F
Hemerocallis	sp.	J
Hepatica	americana	! C *	dry storage is fatal, grow seedlings at cool temp, best accomplished by sowing in open ground
Hepatica	nobilis	! L *	ditto
Heptacodium	miconioides	! A	.
Heracleum	sphondylium ssp. montanum	A N
Hermodactylus	tuberosus	C 2
Hesperantha	baurii	A *	do not disturb seedlings for 1 yr
Hesperis	all species	A	.
Hesperis	matronalis	A
Hesperis	matronalis 'Nana Candidissima'	A
Hesperis	steveniana	A
Heteropappus	altaicus	.
Heterotheca	villosa	B
Heuchera	'Green Ivory'	A
Heuchera	all species	.	grow best in bag for humidity
Heuchera	americana	A	.
Heuchera	americana 'Dale's Strain'	A
Heuchera	chlorantha	.
Heuchera	cylindrica	A 3 *	better germination if seed is stored for 2 y
Heuchera	grossulariifolia	A	.
Heuchera	hallii	C 3
Heuchera	micrantha	A
Heuchera	micrantha v. diversifolia 'Palace Purple'	A
Heuchera	pulchella	A 3
Heuchera	richardsonii	A 3
Heuchera	sanguinea	A
Heuchera	sp.	B
Heuchera	x brizoides	A 3
Hibiscus	'Southern Belle'	A
Hibiscus	ludwigii	6 7
Hibiscus	moscheutos	! A 6 7
Hibiscus	moscheutos 'Southern Belle'	! A 6 7
Hibiscus	moscheutos ssp. palustris	! A 6 7
Hibiscus	palustris	A
Hibiscus	sp.	.
Hibiscus	syriacus	A
Hibiscus	trionum	A 2 6 7
Hieracium	alpinum	A
Hieracium	aurantiacum	A
Hieracium	bombycinum	A
Hieracium	halivelachii	.
Hieracium	lanatum	A
Hieracium	maculatum	J 3
Hieracium	villosum	J 3
Hieracium	waldsteinii	.
Hippophae	rhamnoides	G
Horminum	pyrenaicum	A