How to Grow Autumn Mum Dark Red Scarlet
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Autumn Mum Dark Red Scarlet
Chrysanthemum morifolium
flowerAutumn Mum Dark Red Scarlet is a vibrant chrysanthemum cultivar prized for its deep crimson to dark red blooms that emerge in late summer through fall. These short-day plants are classic autumn decorations and garden staples, producing abundant double or semi-double flowers on bushy, compact plants. They're valued for their reliability, long vase life, and ability to brighten gardens as temperatures cool.
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Example Autumn Mum Dark Red Scarlet timeline · Pittsburgh, PA (Zone 6b)
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Plant Autumn Mum Dark Red Scarlet
Around Apr 17Near Pittsburgh's average last spring frost.
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Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
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First Autumn Mum Dark Red Scarlet blooms
Around Jun 26≈ 70 days after planting
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Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 3-10; most reliable in zones 4-9
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Transplant Establishment
2-3 weeksYoung mums develop root systems and establish baseline foliage; plants appear compact with small leaves
Water gently and consistently. Pinch out growing tips when 6 inches tall to encourage bushiness. Keep soil evenly moist but not waterlogged.
Vegetative Growth
6-8 weeksPlants expand with multiple stems and dense foliage; no flower buds visible yet
Continue pinching back tips until mid-July to promote branching and compact form. Apply balanced fertilizer every 2 weeks. Ensure adequate sunlight and airflow.
Bud Initiation
2-3 weeksFlower buds begin forming in response to shorter days (typically after August 15). Buds appear tight and clustered at branch tips.
Stop pinching plants. Reduce watering slightly. Switch to phosphorus-rich fertilizer to support flower development. Maintain consistent light cycles.
Flowering
4-6 weeksBuds open into deep red-scarlet double or semi-double blooms; flowers fully mature and at peak color intensity
Water at soil level only. Deadhead spent flowers to extend blooming period. Stake tall varieties if needed. Apply low-nitrogen fertilizer if extending bloom season.
Post-Bloom & Winter Dormancy
Varies by climateFlowers fade; foliage may decline. In cold zones, plant dies back; in milder zones, it may regrow from roots.
In zones 3-5, cut back to 3-4 inches after hard frost and mulch heavily (4-6 inches) for winter. In warmer zones, lightly prune and leave some mulch. Water sparingly.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Increase humidity, mist foliage, spray with neem oil or insecticidal soap; avoid overhead watering initially to prevent fungal issues, but misting helps manage mites.
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Spray with water to dislodge; apply insecticidal soap or neem oil; introduce ladybugs or lacewings.
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Use yellow sticky traps; spray undersides of leaves with neem oil or insecticidal soap; improve air circulation.
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Ensure good airflow; avoid wetting foliage; spray with sulfur or baking soda solution (1 tbsp baking soda + 1 tbsp oil + 1 gallon water); remove infected leaves.
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Remove infested leaves; apply spinosad; maintain plant health and vigor.
Uses
Edible Flowers & Tea
CulinaryChrysanthemum flowers are used in Asian cuisine and traditional teas, particularly in Chinese medicine. The petals can garnish salads or be dried for herbal infusions believed to have cooling and detoxifying properties. [source]
Traditional Herbal Remedy
MedicinalChrysanthemum flowers are used in Traditional Chinese Medicine to reduce fever, improve eyesight, and calm the nervous system. Modern herbalism incorporates dried chrysanthemum for anti-inflammatory and antioxidant benefits. [source]
Cut Flowers & Floral Arrangements
HouseholdThe dark red-scarlet blooms are prized for autumn bouquets, wedding arrangements, and home décor. Their long vase life (14-21 days) and abundant flowers make them economical and reliable for floral design. [source]
Pollinator Support
WildlifeAutumn mums provide late-season nectar and pollen for bees, butterflies, and other pollinators during fall migration and preparation for winter. They extend the food supply when many other plants have ceased blooming. [source]
Dried Flowers & Pressed Arrangements
CraftThe sturdy petals dry well and retain color when hung upside-down in a dark, dry location. Dried mum blooms are used in wreaths, potpourri, and pressed-flower craft projects. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
Cut flowers when buds are just opening to barely open—they'll continue opening in the vase and last 2+ weeks. Cut in early morning after dew dries. Use sharp, clean scissors and cut at a 45-degree angle. Remove lower leaves below the waterline. Change water every 2-3 days and recut stems. For garden display, enjoy blooms in place and deadhead spent flowers to extend the season.
Fun Facts
- 🌱 Chrysanthemums are the national flower of Japan and hold deep cultural significance in Asian floral traditions, particularly in autumn celebrations and chrysanthemum festivals.
- 🌱 Mums are 'short-day plants,' meaning they require nights longer than 14 hours to initiate flowering—this is why they reliably bloom in fall, making them classic autumn decorations.
- 🌱 The dark red color in mums comes from anthocyanin pigments, the same compounds found in red wine and blueberries, which provide antioxidant benefits when used in teas.
Gardening Terms
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