plant of the month
Rosa spp. and hybrids
Miniature rose, Micro
rose, Dwarf rose, China rose, Fairy rose, Pygmy rose
Potted miniature roses are
deciduous (leaf-shedding) plants with clusters of small blooms,
1⁄2 inch to 11⁄2 inches in diameter. There are single-flowered
varieties (less than eight petals), semidouble-flowered
varieties (eight to 20 petals) and double-flowered varieties
(more than 20 petals). Most varieties have tiny thorns, but some
varieties are thornless. Heights generally range from
approximately 6 to 12 inches (micro rose bushes), but some
miniature rose plants can reach 17 inches in height.
A range of reds, pinks,
oranges, salmons/peaches/corals, yellows, and whites as well as
lavender and bicolors.
Indoors, two to three
weeks is normal, depending on variety, care and stage of
maturity at time of purchase; however, some varieties can last
as long as six weeks. Outdoors, these plants can survive for
several years in full sun, depending on climate.
Miniature roses are
available year-round from various sources.
Indoors, bright light is required, including at least six hours
of direct sunlight per day. Outdoors, full sun is required.
These plants are sensitive to drying out and must be kept
uniformly moist. Water thoroughly, and allow the top 1⁄2 inch of
soil to dry out between waterings. Avoid getting foliage wet.
Empty excess water from plant saucers or pot covers within an
hour after watering to prevent root rot.
Cool to average room temperatures (65 F to 70 F) are ideal.
These plants will tolerate temperatures as low as 50 F indoors
during the winter.
Miniature roses like high humidity levels and good air
circulation. Place the pots on pebble trays to raise the
humidity level around the plants, but do not mist these plants.
Fertilize monthly during flowering with a balanced fertilizer
Cut off blooms as they die to prevent them from turning into
rose hips (the fruit of rose plants), which consume energy
needed to produce new blooms. Also remove foliage as it yellows
When a plant stops blooming, transplant it into a larger pot. If
there is more than one plant in a pot, remove the root ball from
the pot, and soak it in water. When it’s saturated, carefully
separate the plants, and transplant each into a larger pot.
Miniature roses can be kept in their pots, but they must be
allowed to become dormant in winter. Store them in a garage or
other cold, protected place (don’t let roots freeze) until early
March, then move them to a warmer location. If you want to
transplant them outdoors, do so in late spring (May or June,
depending on climate).
Rose plants are moderately sensitive to ethylene gas, which can
result in leaf, bud and/or flower drop. Make sure your plants
are treated with an ethylene inhibitor at the grower or during
transportation, and display them away from the produce section
in your store.
Too-dry air is likely the cause. Cut off shriveled buds, and
place the pot on a pebble tray. The plant may not recover unless
it is repotted and moved outdoors.
BLACK SPOTS WITH
YELLOW RINGS ON LEAVES
Rose black spot, a fungal disease caused by damp leaf surfaces,
is the problem. Clip off affected leaves, even if you have to
remove most of them. Plants should recover, with proper care.
BROWN SPOTS ON
PETALS; FUZZY GRAY PATCHES ON STEMS OR LEAVES
LEAVES TURN YELLOW
Causes include not enough light, not enough water, too-high
temperatures and/or Botrytis
WITH WEBBING ON UNDERSIDES
This is a sign of spider mites. Isolate the plant, prune
infested stems, clean the plant with warm water, spray with
insecticidal soap, move to a shady spot for a few days and
increase the humidity level around the plant..
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Select plants with two to five open flowers and
numerous buds showing color.
Look for compact, well-branched plants with good bud
count and even flowering and no dropped leaves or
Choose only plants with bright green foliage, with
no yellow, brown or gray spots.
Some information provided
Botanica, by R.G.
Turner Jr. and Ernie Wasson
Chain of Life Network® , ww.chainoflife.org
Complete Houseplant Survival Manual, The, by Barbara
Hortus Third, by Liberty Hyde Bailey and Ethel Zoe Bailey
Houseplant Encyclopedia, The, by Ingrid Jantra and Ursula
House Plant Expert, The,
Photo: Bay City Flower Co., Inc.