Page 6 - Super Floral > March 2014 Issue
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BOTANICAL NAME genetically engineered to create specific
Hydrangea spp. colors, and these are not changed by soil.
(hy-DRAN-jee-uh, hy-DRAN-juh) Growers also use spray dyes to alter
COMMON NAMES Hydrangea hues, so the color range of
Hydrangea macrophylla these flowers is virtually limitless.
hortensia, mophead hortensia, DECORATIVE LIFE
lacecap hortensia, garden Hydrangea, Indoors, Hydrangea plants usually bloom
big-leaf Hydrangea, French Hydrangea up to four weeks, with each flower head
Hydrangea paniculata lasting 15 to 20 days, depending on light,
panicle Hydrangea, peegee Hydrangea temperature and care.
Hydrangeas are shrublike plants with These plants are readily available from macrophylla
Mophead hortensia,
small star-shaped florets that form either February through May, but they can be Mophead Hydrangea
Photos: Bay City Flower Co., Inc.
large rounded heads (H. macrophylla) or purchased year-round in many areas,
pyramidal heads (H. paniculata). depending on grower. ETHYLENE SENSITIVITY Hydrangeas are
The rounded flower heads are either moderately sensitive to ethylene and may
consumer care
“mopheads,” with densely massed sterile exhibit flower-shattering when exposed
florets, or “lacecaps,” with a ring of sterile LIGHT Potted Hydrangeas require bright to the gas. Keep these plants away from
florets surrounding tiny fertile flowers. light but no exposure to direct sun. sources of ethylene in your facilities,
Leaves are large and dark green, with WATER Hydrangeas are thirsty plants. Keep especially produce.
roughly serrated edges. potting medium moist at all times to pre- FERTILIZER As houseplants, Hydrangeas
COLORS vent wilting, which will reduce longevity. generally do not require fertilizer.
Hydrangeas, particularly the mopheads, are Water these plants with room-temperature
available in whites; pinks; violets (red-vio- rainwater or soft water, if possible. If the challenges
let, blue-violet, lavender, purple); blues; potting medium dries out, submerge the PESTS Aphids and spider mites are com-
greens; and even reddish-wines and pots in water until completely saturated mon pests, and in some areas, snails and
browns, as well as bicolors and multicolors. (approximately 1 hour), then allow them slugs can be problems. Control aphids
Some Hydrangea flower colors are to drain. Do not allow pots to sit in water, and spider mites by washing the plants
determined by the acidity or alkalinity of or root rot may result. with an insecticidal soap, and remove
the soil: blue, if grown in acidic soil, and TEMPERATURE Hydrangeas prefer cool tem- snails and slugs by hand.
pink, if grown in alkaline soil. White peratures—60 F to 70 F during the day YELLOW LEAVES This generally is the result
Hydrangeas are not changed by soil type. and 50 F to 60 F at night. of high calcium levels in the water. Water
New varieties are continuously being HUMIDITY Mist the leaves occasionally. plants with rainwater or soft water. sf

H. macrophylla ‘Shooting Star’
Lacecap hortensia, Lacecap Hydrangea toxicity alert
n If large amounts of Hydrangea bark,
leaves or flower buds are ingested,
nausea, stomach pain, vomiting and
sweating can occur. Advise customers
to keep these plants out of reach of
pets and small children.

buying tip

n Buy Hydrangea plants when at least 75 per-
Super Floral has created this page for the education of store-level employees. To download cent of the florets are open and showing color.
a reprintable PDF, please go to and select “Current Issue.”

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