Eremurus Robustus.--This hardy perennial bears tall, handsome spikes
of sweetly-scented, peach-coloured flowers in May. It will grow in
any ordinary soil, and is easily propagated by young plants from the
roots. Height, I ft.
Ericas (_Heaths_).--It is useless to attempt to grow these beautiful
shrubs unless proper soil is provided. The free-growing kinds thrive
best in good black peat and require large pots. The dwarf and
hard-wooded kinds must be provided with sandy peat, and the pots
thoroughly well drained. They need less water than the free-growing
kinds. They all want a good deal of air, and must not be crowded too
closely together. Protect from frost and damp. Cuttings off the tender
tops of the shoots planted in sand under glass will strike. The
cuttings of the stronger-growing kinds should be somewhat longer. As
soon as rooted, pot off singly, place in a close frame, and harden off
by degrees. The hardy sorts grow in a sandy peat, and may be increased
by layers or by cuttings. They bloom at various times. Height, 6 in.
to 4 ft. (_See_ "Heaths, Greenhouse.")
Erigeron.--Very handsome hardy perennials, producing a copious display
of bloom. They will grow in any soil, and may be increased by division
or by seed sown between March and July, or in August or September.
They flower at the end of July. Height, 1 ft.
Erinus.--The hardy perennial kinds bloom in March, the greenhouse
varieties in May. The latter are very pretty. They all like a sandy
soil, and may be increased by seed or by division. Height, 6 in. to 9
in.
Eriogonum.--These pretty, hardy, herbaceous plants bloom in June. They
grow best in a compost of loam and peat, and are easily raised from
seed. Height, 1-1/2 ft.
Eriostemon.--Greenhouse evergreen shrubs. Grow in sandy peat with a
little loam added. Cuttings will strike in sand. They flower in May
and June. Height, 2 ft. to 3 ft.
Erodium.--An extensive genus of very beautiful plants, mostly hardy.
They will grow in any soil, and merely require ordinary treatment. The
bloom is produced in June or July. Height, 4 in. to 1 ft.
Eryngium.--A very ornamental and beautiful kind of Thistle. They are
mostly quite hardy, and will grow in any garden soil, though they
thrive best in a light, sandy one. The greenhouse and frame varieties
should be grown in pots, so that they can be easily housed in winter.
They are readily increased by seed or division, and produce their
flowers in July. Height, 1 ft. to 4 ft.
Erysimum.--Flowers of little merit. The herbaceous kinds thrive in
common soil, but do best in a mixture of loam and peat. They may be
increased by cuttings placed under glass. The annuals and biennials
merely need sowing in the open during autumn. They bloom in June and
July. Height, 1-1/2 ft. to 2 ft.
Erythrina Crista Galli (_Coral Plant_).--A showy, summer-blooming
greenhouse plant. Place it in turfy loam enriched with old manure. It
may be transferred to the garden in the summer, and when the wood is
ripe cut it back and keep it dry till spring. Cuttings taken at a
joint, with the leaves left on, may be struck in sand.