Skip to main content
Costa Rica Tree Atlas logoTree AtlasCosta Rica
HomeTreesRegionsIdentifyCalendarCompareEducationGlossarySafetyAbout
/
Costa Rica Tree Atlas logoTree AtlasCosta Rica

© 2026 Costa Rica Tree Atlas. Code: AGPL-3.0 | Content: CC BY-NC-SA 4.0 Made with ❤️ for Costa Rica's forests

? Keyboard shortcuts

  1. Home
  2. Trees
  3. Madroño
RubiaceaeLC

Madroño

Calycophyllum candidissimum

18 min read
Also available in:Español
Madroño

Native Region

Mexico to Central America

Max Height

15-25 meters

Family

Rubiaceae

Conservation

LC

Uses

Timber (tool handles, construction)OrnamentalTraditional medicineHoney productionShade

Season

Flowering

Apr-Jun

Fruiting

Jul-Sep

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
FlowersFruits

🛡️Safety Information

Toxicity Level
🟢None
Allergen Risk
🔵Low
✅
Child Safe
Yes
✅
Pet Safe
Yes

Toxicity Details

No toxic parts. The tree is completely safe. No documented toxicity to humans or animals. The flowers are visited by bees for honey production. No ingestion hazards from any part of the tree.

Skin Contact Risks

No skin contact risk. The tree can be touched and handled safely. The bark, leaves, and flowers pose no irritation risk.

Allergenic Properties

LOW. Wood dust may cause standard respiratory irritation during woodworking (use dust mask when sanding), but the wood is not listed among allergenic species. Not a significant allergen source.

Madroño (Lemonwood)

✅The Snowy Crown of the Dry Forest

The Madroño (Calycophyllum candidissimum), known in English as Lemonwood or Degame, creates one of Central America's most breathtaking natural spectacles. During the dry season, when most trees stand bare or subdued, the Madroño explodes into bloom, covering itself so completely with tiny white flowers that the entire tree appears to be dusted with snow. This stunning display has earned it the affection of peoples throughout its range—Nicaragua has even chosen it as their national tree. In Costa Rica's Guanacaste region, the flowering Madroño is an unforgettable sight, standing bright white against the brown dry forest backdrop like a beacon of beauty.

Quick Reference

🌿

iNaturalist Observations

Community-powered species data

290+

Observations

186

Observers

View Species Page ↗Browse Photos ↗🇨🇷 Costa Rica Only ↗

📸 Photo Gallery

Photos sourced from the iNaturalist citizen science database. View all observations →↗


Taxonomy and Classification

🌿
Kingdom
Plantae
🌸
Clade
Angiosperms
🌸
Clade
Eudicots
📊
Order
Gentianales
🏛️
Family
Rubiaceae
🔬
Genus
Calycophyllum
🧬
Species
C. candidissimum
ℹ️Name Origins
  • Calycophyllum: From Greek "kalyx" (cup) + "phyllon" (leaf) - calyx-like leaves - candidissimum: Latin for "most white" - referring to the flowers
  • Rubiaceae: The coffee family! - English name "Lemonwood" refers to the yellowish wood

Common Names

Related Species in Costa Rica


Physical Description

General Form

The Madroño is a medium-sized tree with a rounded to irregular crown. Its smooth, grayish bark and relatively small leaves give way during flowering season to an explosion of white that completely transforms the tree's appearance.

Mature Height/100
Crown Spread/100
Trunk Diameter/100
Flower Coverage/100

Identification Features

Bark and Trunk

  • Bark color: Grayish to light brown
  • Texture: Smooth to slightly fissured
  • Pattern: May peel in thin strips
  • Trunk: Usually single, straight
  • Inner bark: Yellowish (hence "lemonwood")

Leaves

  • Type: Simple, opposite
  • Shape: Elliptic to oblong
  • Size: 6-15 cm long
  • Texture: Leathery, glossy
  • Color: Dark green above, paler below
  • Margin: Entire (smooth edge)

Flowers

  • Size: Small (5-8 mm)
  • Color: Pure white
  • Arrangement: Dense terminal clusters
  • Fragrance: Sweet, honey-like
  • Timing: Dry season (January-April)
  • Coverage: COMPLETE - entire crown white!

Fruit

  • Type: Small capsule
  • Size: 5-8 mm
  • Seeds: Tiny, wind-dispersed
  • Timing: Following flowering
  • Appearance: Inconspicuous
💡The Spectacular Flowering

The Madroño's flowering is one of nature's great shows in the dry forest: What Happens: - Tree drops many leaves - Flower buds develop at branch tips - Thousands of tiny white flowers open simultaneously - Entire crown becomes WHITE The Effect: - Visible from great distances - Appears snow-covered - Glows in sunlight - Stunning against brown dry forest Timing (Costa Rica): - Usually February-April - Peak of dry season - Lasts 2-4 weeks - Visit Guanacaste to see it! Why It Works: - Pollinators easily find tree - Massive display attracts bees - Coordinates flowering for outcrossing - Energy invested all at once


Distribution and Habitat

Global Distribution

🗺️

Geographic Distribution

Distribution in Costa Rica

Habitat Preferences


    Cultural Significance

    🇳🇮

    National Tree of Nicaragua

    The Madroño holds special cultural status in Central America: Nicaraguan National Symbol: - Official national tree of Nicaragua - Represents the country's natural beauty - Celebrated in poetry and art - Symbol of resilience in dry conditions Why the Madroño?: - Spectacular native beauty - Thrives in Nicaraguan dry forests - Provides practical benefits (wood, shade) - Blooms during national celebrations In Costa Rica: - Beloved dry forest icon - Featured in nature tourism - Guanacaste cultural identity - Agricultural/ranch heritage connection Traditional Meanings: - Purity (white flowers) - Hope (blooming in harsh season) - Beauty in adversity

    Historical & Traditional Uses

    Indigenous & Colonial Era

    • Tool Making: Extremely hard wood used for axe handles, machete handles, and agricultural implements
    • Construction: Used for fence posts that resist rot and insect damage for decades
    • Firewood: Dense wood burns slowly and provides intense heat
    • Traditional Medicine: Bark extracts used for various ailments (though not widely documented)
    • Rural Economy: Important trade wood in dry forest regions

    Modern Cultural Role

    • Symbolic Value: Represents dry forest landscapes and Guanacaste identity
    • Tourism: Spectacular flowering attracts ecotourists
    • Honey Production: "Madroño honey" is a sought-after artisanal product
    • Urban Landscaping: Increasingly planted in parks and public spaces
    • Environmental Education: Used to teach dry forest ecology

    Regional Names & Meanings

    The name "Madroño" connects this tree to broader cultural themes:

    ℹ️The Snow Tree of Guanacaste

    In Costa Rica's Guanacaste Province, the flowering Madroño has become synonymous with the transition from dry to rainy season:

    Cultural Associations:

    • Elder residents remember landscapes "painted white" with Madroño blooms
    • Farmers used flowering timing as seasonal indicator for planting
    • Sabanero (cowboy) culture associated the tree with ranch life
    • Modern tour guides highlight flowering Madroños as dry forest gems

    Contemporary Significance:

    • Featured prominently in dry forest conservation campaigns
    • Used as educational example of dry forest adaptation
    • Symbol of regional pride in Guanacaste's unique ecosystems
    • Inspiration for local artists and photographers

    The Madroño represents not just a tree, but the identity of an entire region and its relationship with the seasonal dry forest.

    Wood Craftsmanship Tradition

    Madroño wood has been prized for generations:


      Conservation & Population Status

      Current Status Assessment

      LC
      ✅

      Least Concern

      IUCN Red List Status

      IUCN Red List: Least Concern (LC)

      The Madroño maintains stable populations throughout its Central American range, though localized pressures exist:

      Positive Factors

      • Wide Distribution: Mexico through Central America
      • Dry Forest Specialist: Thrives in seasonal environments
      • Fast Growth: Can establish quickly in suitable conditions
      • Cultural Protection: National tree status in Nicaragua provides recognition
      • Multiple Uses: Value ensures propagation and planting

      Concerns & Pressures

      • Habitat Loss: Conversion of dry forests to agriculture/pasture
      • Wood Demand: Prized for tool handles - selective logging
      • Dry Forest Decline: Overall reduction in dry forest area
      • Climate Change: Potential effects on dry season timing
      • Fire Pressure: Increased fire frequency in degraded dry forests

      Regional Conservation Status

      Protected Populations in Costa Rica

      The Madroño is well-represented in Costa Rica's protected areas:

        ✅Conservation Success in Context

        The Madroño represents a conservation success story, but with important caveats:

        Why It's Doing Well:

        • Spectacular beauty ensures appreciation and protection
        • Economic value motivates planting and sustainable use
        • Adaptability to disturbed sites aids survival outside pristine forests
        • National tree status raises conservation awareness
        • Protected areas safeguard significant populations

        Remaining Challenges:

        • Overall dry forest decline affects all dry forest species
        • Genetic diversity concerns if only isolated populations remain
        • Climate change may alter flowering patterns and dry season timing
        • Wood harvest pressure on larger individuals continues

        The Bigger Picture: While the Madroño itself is secure, it serves as a flagship species for dry forest conservation. Protecting Madroño populations means protecting entire dry forest ecosystems.


        Seasonal Changes & Phenology

        Annual Cycle in Dry Forest

        The Madroño's dramatic seasonal changes are tightly synchronized with Guanacaste's pronounced wet-dry cycle:

        The Flowering Spectacle: Timing & Triggers

        Environmental Triggers

        • Drought Stress: Extended dry season prepares trees
        • Day Length: Increasing day length signals timing
        • Temperature: Rising heat triggers bud break
        • First Rains: Initial rains may trigger or enhance bloom
        • Tree Age: Mature trees flower most reliably
        • Site Conditions: Full sun specimens flower most profusely

        Flowering Details

        • Duration: 3-6 weeks at peak
        • Flower Density: Thousands of small flowers per tree
        • Color: Pure white (occasionally cream-tinted)
        • Fragrance: Subtle, slightly sweet
        • Timing Variation: Can vary 2-4 weeks year to year
        • Synchronized: Trees in an area often bloom together
        💡Best Time to See Madroño in Bloom

        Prime Viewing: Late April to Early May

        To experience the spectacular "snow in the forest" phenomenon:

        Where to Go:

        • Área de Conservación Guanacaste: Multiple locations with roadside viewing
        • Santa Rosa National Park: Hiking trails pass flowering trees
        • Palo Verde National Park: Wetland overlooks with dry forest views
        • Landscape Zone: Along Highway 21 between Liberia and La Cruz

        What to Bring:

        • Camera with telephoto lens for canopy shots
        • Binoculars to observe bee activity
        • Water (it's hot and dry!)
        • Early morning = best light and bee activity

        Photography Tips:

        • Shoot in early morning for soft light
        • Contrast white flowers against blue sky
        • Include brown dry forest for dramatic context
        • Close-ups of bee-covered flower clusters
        • Wide shots showing entire white crown

        Important: Flowering timing varies by 2-4 weeks depending on yearly rainfall patterns. Contact local ranger stations or tour operators for current bloom status.

        Fruit & Seed Development

        🍎
        Fruit Formation
        May-June
        Small capsules develop after pollination
        📈
        Maturation
        July-September
        Capsules ripen and dry, turning brown
        🌱
        Seed Release
        September-November
        Capsules split, releasing tiny winged seeds
        🌬️
        Dispersal
        Wind
        Light seeds carried by wind during transition to dry season

        Phenological Variation by Location

        Timing shifts based on local conditions:

        ℹ️Climate Change Considerations

        Recent observations suggest potential shifts in Madroño phenology:

        Reported Changes:

        • Some years showing earlier flowering (by 1-2 weeks)
        • More variable bloom timing year to year
        • Occasional "false starts" with brief blooms that abort
        • In some locations, reduced deciduous period

        Potential Causes:

        • Earlier onset of dry season in some years
        • Temperature increases triggering earlier responses
        • Rainfall pattern changes affecting tree water stress
        • Interaction of multiple climate variables

        Research Needs: Long-term phenology monitoring would help document and understand these potential shifts. Citizen scientists and photographers can contribute by documenting flowering dates annually.


        Ecological Importance

        Wildlife Value

        Pollinators

        • Bees: Primary pollinators
        • Butterflies: Visit flowers
        • Moths: Some nocturnal pollination
        • Honey production: Excellent source

        Habitat

        • Dry forest ecosystem: Key component
        • Secondary forest: Pioneer species
        • Birds: Nesting sites in crown

        Ecological Services

        • Dry season flowers: Critical nectar source
        • Soil stabilization: Deep root system
        • Shade: Livestock and wildlife
        • Carbon storage: Long-lived trees
        ✅Dry Season Nectar Champion

        The Madroño provides critical resources when little else blooms: Why This Matters: - Dry season = few flowers available - Many bees, butterflies need nectar - Madroño provides massive resource - Timing fills a crucial gap For Beekeepers: - Excellent honey tree - "Madroño honey" is prized - Light colored, mild flavor - Monofloral honey possible For Wildlife: - Energy for dry season survival - Supports pollinator populations - Cascading ecosystem benefits The Madroño is a dry season lifeline for the pollinator community of the tropical dry forest.


        Uses

        Timber

        Wood Properties

        Other Uses


        Cultivation

        Growing Madroño


        Identification Guide

        How to Identify Madroño


        Where to See Madroño in Costa Rica

        💡Seeing the Spectacular Flowering

        To witness the Madroño's legendary white display: Best Time: - February to April - Peak of dry season - After hottest days Best Places: - Santa Rosa National Park - Guanacaste Province roadsides - Palo Verde National Park - Rural areas of Nicoya What to Look For: - Bright white crowns visible from distance - Trees that appear "snowy" - Strong sweet fragrance nearby - Clouds of bees visiting Photography Tips: - Early morning/late afternoon light - Blue sky background ideal - Individual trees or landscapes - Include dry forest context This is one of Costa Rica's great natural spectacles— don't miss it if you're in Guanacaste during dry season!


        External Resources

        🔗
        iNaturalist: Calycophyllum candidissimum↗

        Community observations and photos

        🔗
        Tropical Timber Information↗

        International Tropical Timber Organization


        References

        📚 Scientific References & Further Reading

        Janzen, D.H. (1983). Costa Rican Natural History. University of Chicago Press

        Francis, J.K. (1991). Calycophyllum candidissimum - Madroño. USDA Forest Service Fact Sheet


        ✅White Fire in the Dry Forest

        In the heart of the dry season, when Guanacaste's forests stand brown and dusty under the relentless sun, the Madroño catches fire— not with flame, but with flowers. Thousands upon thousands of tiny white blossoms open simultaneously, transforming each tree into a beacon of pure white against the parched landscape. It's a sight that stops travelers in their tracks, that draws photographers from around the world, that has earned this tree the honor of being Nicaragua's national symbol. The sweetness of the flowers fills the air as bees work frantically to gather the precious nectar, one of the only abundant food sources in this harsh season. This is the Madroño's genius—to bloom when no one else can, to offer abundance when all around is scarcity, to make beauty from adversity. Its wood is among the hardest and most durable in Central America, fitting for a tree that has learned to thrive where others merely survive. To see a Madroño in full bloom is to understand something profound about timing, about strategy, about the spectacular ways that nature has evolved to fill every niche and season.

        Safety Information Disclaimer

        Safety information is provided for educational purposes only. Individual reactions may vary significantly based on age, health status, amount of exposure, and individual sensitivity. Always supervise children around plants. Consult a medical professional or certified arborist for specific concerns. The Costa Rica Tree Atlas is not liable for injuries or damages resulting from interaction with trees described in this guide.

        • Always supervise children around plants

        • Consult medical professional if unsure

        • Seek immediate medical attention if poisoning occurs

        Information compiled from authoritative toxicology sources, scientific literature, and medical case reports.

        Related Trees

        Cortez Negro

        Cortez Negro

        Tabebuia impetiginosa

        Corteza Amarilla

        Corteza Amarilla

        Handroanthus ochraceus

        Cortez Blanco

        Cortez Blanco

        Roseodendron donnell-smithii

        Caña Fístula

        Caña Fístula

        Cassia fistula

        Distribution in Costa Rica

        GuanacasteAlajuelaHerediaSan JoséCartagoLimónPuntarenasNicaraguaPanamaPacific OceanCaribbean Sea

        Legend

        Present
        Not recorded

        Elevation

        0-800m

        Regions

        • Guanacaste
        • Puntarenas
        • Alajuela
        • San José