How to Grow Compact Scarlet Nasturtium
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Compact Scarlet Nasturtium
Tropaeolum majus 'Compact Scarlet'
flowerCompact Scarlet is a dwarf nasturtium variety known for its vibrant scarlet-red flowers and bushy, mounding growth habit. It reaches only 12-18 inches tall, making it ideal for borders, containers, and small garden spaces. The plant produces edible flowers and foliage with a peppery flavor.
When should you plant Compact Scarlet Nasturtium in your zone?
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Example Compact Scarlet Nasturtium timeline · Pittsburgh, PA (Zone 6b)
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Plant Compact Scarlet Nasturtium
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 Compact Scarlet Nasturtium blooms
Around May 17≈ 30 days after planting
Sample dates for Pittsburgh, PA. Sign up to get exact Compact Scarlet Nasturtium dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 3-10; prefers cooler climates and struggles in intense summer heat
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Get my Compact Scarlet Nasturtium timeline →Growth Stages
Seedling
2-3 weeksCotyledons emerge within 7-10 days; first true leaves appear heart-shaped and pale green
Maintain warm soil (65-75°F). Provide bright light to prevent leggy growth. Keep soil moist but not soggy.
Vegetative
3-4 weeksPlant develops compact bushy form with rounded leaves; stem thickens and branches emerge
Pinch growing tips early to encourage bushiness. Water regularly. Do not over-fertilize as excess nitrogen promotes foliage over flowers.
Budding
1-2 weeksFlower buds form in leaf axils; distinctive spur-like sepals become visible
Continue moderate watering. Ensure adequate sunlight. Reduce fertilizer to promote flowering.
Flowering
6-12 weeksBright scarlet flowers open successively throughout growing season; each flower has five petals and a long nectar spur
Deadhead spent flowers to encourage continuous blooming. Water at soil level. Feed with dilute phosphorus-rich fertilizer sparingly.
Seed Development
3-4 weeksAfter pollination, large round seed pods develop; pods mature to brown or tan color
Allow some flowers to remain for seed collection if desired. Pods will split open when fully mature.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Spray with strong water stream; use insecticidal soap; encourage beneficial insects like ladybugs. Nasturtiums act as trap crop.
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Increase humidity; spray with water; use neem oil if severe. Avoid over-fertilizing with nitrogen.
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Use yellow sticky traps; spray with insecticidal soap; improve air circulation.
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and
Hand-pick; create barriers with diatomaceous earth; beer traps; encourage ground beetles.
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Remove affected leaves; use reflective mulches; encourage parasitic wasps.
Uses
Edible flowers and greens
CulinaryThe bright scarlet flowers, rounded leaves, and immature seed pods are all edible with a peppery, slightly spicy flavor. Flowers make colorful garnishes for salads, and young leaves can be added to leafy greens. [source]
Antimicrobial properties
MedicinalNasturtium contains glucosinolates and sulfur compounds with traditional antimicrobial applications. Historically used in herbal medicine to support immune function and respiratory health. [source]
Natural pest control
HouseholdActs as a trap crop for aphids and other garden pests, protecting nearby vegetables. Commonly planted near brassicas and squash to attract pest insects away from edible crops. [source]
Cut flowers and arrangements
CraftBright scarlet blooms are striking in fresh flower arrangements and summer bouquets. Flowers last several days in water and add vibrant color to floral displays. [source]
Pollinator attraction
WildlifeFlowers attract hummingbirds, bees, and butterflies, providing valuable nectar and pollen. The tubular flower structure is especially attractive to hummingbirds. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
Flowers are edible and best harvested in the morning after dew dries; they have a peppery flavor and are excellent for salads and garnish. Pick flowers regularly to promote continuous blooming. Young seed pods can be pickled like capers. Harvest seeds when pods turn brown and dry; store in a cool, dry place.
Fun Facts
- 🌱 Nasturtiums are native to South and Central America and were brought to Europe by Spanish conquistadors in the 16th century; the name 'Tropaeolum' is Latin for 'trophy,' referring to the plant's resemblance to a shield and helmet.
- 🌱 The plant is so effective at attracting aphids that it's often used as a sacrificial trap crop in organic gardens—gardeners deliberately plant nasturtiums nearby to protect more valuable vegetables.
- 🌱 All parts of the nasturtium are edible and peppery-flavored due to glucosinolates (the same compounds found in wasabi and horseradish), and the immature seed pods are sometimes brined and used as a caper substitute.
Gardening Terms
New to gardening? Learn about terms used in this guide:
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