150 MISSOURI BOTANICAL GARDEN BULLETIN 
salvias. S. azwrea grandiflora, or the Rocky Mountain sage, 
grows to a height of 6 feet and blooms from August on. 8. 
argentea, growing only 2 to 3 feet high, produces pinkish 
white flowers in June, and 8. pratensis, showy spikes of deep 
blue flowers from June to September. 
Solidago.—In conjunction with masses of the hardy asters, 
the Solidago or goldenrod produces most of the fall color in 
the garden. S. canadensis is one of the commonest and still 
one of the best species. No garden is complete without it, 
and with good care and in good soil, it far surpasses in 
beauty the wild species. 
Tritoma.—tThese plants, known also as the torch-lilies, or 
red-hot poker plants, require protection during the winter, 
but their spikes of bright flowers coming in late or middle 
summer are well worth the little effort taken to grow them. 
The colors vary from yellow to orange and red, the red 
species being the most striking. The species most commonly 
grown are 7’. “Express” (orange), 7. Pfitzerii (orange scar- 
let), T. rufa (canary-yellow), and T. Tuckii (deep red). 
Veronica or speedwell.—This is a large and much culti- 
vated group of blue-flowered perennials, consisting of tall and 
fairly dwarf varieties. Their color and their long bloom- 
ing period make them very desirable garden subjects. V. 
longifolia subsessilis is the handsomest blue-flowered peren- 
nial known. It grows to a height of 2 feet and the spikes 
are completely covered with brilliant blue flowers which 
make beautiful cut specimens. It blooms from August until 
frost and is readily propagated from cuttings. V. spicata, 
while not to be compared with the former, is a pleasing species 
prized for its pale blue flower spikes. V. repens is a creep- 
ing or trailing variety with pale blue flowers and is a good 
plant for low places at edges of walks or perennial borders. 
Yucca or Spanish needle.—No collection of perennials is 
complete without a few of these much-prized plants. They 
make continuous points in the border and their leaves are 
evergreen. When the tall spikes of waxy white flowers 
appear, there are few plants that can surpass them. Y. fila- 
mentosa, growing 4 to 5 feet high and blooming in June, is 
the species most commonly grown. 
ORNAMENTAL GRASSES 
For producing light tropical effects at certain points in the 
shrubbery, and especially along streams or at the edges of 
pools, nothing is quite as attractive as the grasses. They 
require but little care and seem to improve with age. The 
varieties are the following: 
