The Public Herbarium

Frankincense (Boswellia spp.) resin

Making Natural Incense Cones

Comprehensive guide covering cone formulation covering binding agent chemistry, moisture content calculations, compression techniques, combustion rate optimisation, and stability parameters. Western formulation science for incense cone making.

Table of Contents

  1. The History & Science of Combustible Incense
  2. Understanding Combustion Chemistry
  3. Base Materials: Comparative Analysis
  4. Binder Chemistry & Selection
  5. Aromatic Material Selection & Preparation
  6. Water Chemistry & Hydration
  7. Advanced Formulation Principles
  8. Shaping Techniques & Physics
  9. Drying Science & Optimisation
  10. Professional Formulations
  11. Troubleshooting & Quality Control
  12. NZ-Specific Applications

The History & Science of Combustible Incense

Historical Context

Ancient Origins:
Combustible incense dates back over 4,000 years, with evidence from:

Evolution of Forms:

The Science of Self-Burning Incense

Fundamental Principle: Combustible incense achieves sustained smouldering combustion without external heat source after initial ignition.

Key Requirements:

  1. Combustible matrix – Provides fuel for sustained burn
  2. Optimal oxygen flow – Allows combustion without flaming
  3. Structural integrity – Maintains form during burn
  4. Aromatic payload – Releases fragrance as it burns

Why This Is Challenging:
Pure aromatic materials (resins, essential oils, flowers) don’t burn well on their own:

Solution: Create a composite material with precisely balanced components.

Understanding Combustion Chemistry

Types of Combustion

1. Flaming Combustion (What We’re Avoiding):

2. Smoldering Combustion (Our Goal):

3. Pyrolysis (Partial Combustion):

The Chemistry of Smouldering

Oxidation Reaction (Simplified):

For cellulose-based materials (wood, plant matter):
C₆H₁₀O₅ + 6 O₂ → 6 CO₂ + 5 H₂O + heat + volatiles (cellulose

What Actually Happens:

  1. Heat zone advances through cone from tip to base
  2. Ahead of the heat: Moisture evaporates, aromatics begin volatilising
  3. In the heat zone: Cellulose oxidises, creating CO₂ and heat
  4. Behind the heat: Ash forms, residual heat volatilises remaining aromatics

Critical Balance:

Factors Affecting Combustion

1. Particle Size:

2. Density:

3. Moisture Content:

4. Fuel-to-Aromatic Ratio:

Base Materials: Comparative Analysis

What Makes a Good Base Material

Essential Properties:

  1. Combustibility: Burns steadily without flaming
  2. Fine grindability: Can be reduced to flour-like powder
  3. Structural integrity: Provides matrix for binding
  4. Aromatic neutrality or complementarity: Doesn’t overpower aromatics
  5. Availability: Accessible and affordable

Sandalwood (Santalum species)

botanical drawing of Indian Sandalwood (Santalum album)
Indian Sandalwood (Santalum album)

Species:

Chemical Composition:

Combustion Properties:

Pros:

Cons:

Makko Powder (Tabu-no-ki, Machilus thunbergii)

Makko (Machilus thunbergii) tree
Makko (Machilus thunbergii)

What It Is: Bark from Japanese evergreen tree, ground to fine powder

Chemical Composition:

Combustion Properties:

Pros:

Cons:

Rosemary (Rosmarinus officinalis)

Rosemary (Rosmarinus officinalis) in flower
Rosemary (Rosmarinus officinalis)

Parts Used: Stems + leaves (entire aerial parts)

Chemical Composition:

Combustion Properties:

Pros:

Cons:

Preparation:

  1. Harvest stems and leaves
  2. Dry thoroughly (1-2 weeks, <10% moisture)
  3. Grind in batches using coffee grinder
  4. Sieve to flour consistency
  5. Recombine fine powder with fibrous bits (70:30 ratio)

Pine Needles (Pinus radiata in NZ)

Pine (Pinus radiata) showing needles and cones
Pine (Pinus radiata)

Chemical Composition:

Combustion Properties:

Pros:

Cons:

Preparation:

  1. Collect from fallen branches (ensure dry, not moldy)
  2. Dry completely
  3. Grind very fine (pine is tough to grind)
  4. May need to sieve multiple times

Comparative Table

Base MaterialCombustion QualityScent ProfileCost (NZD/100g)NZ AvailabilityBest For
Sandalwood (Australian)ExcellentSweet, woody$20-35Import onlyPremium blends
Makko PowderExcellentNearly neutral$15-30Import onlyProfessional work
RosemaryGoodHerbaceousFree-$2Locally abundantBudget/experimental
PineFair-GoodForest, freshFreeEverywhereBudget blends

Blending Bases

Why Blend:

Example Blends:

“Premium Budget” Base:

“Forest Temple” Base:

“Local & Sustainable” Base:

Binder Chemistry & Selection

Why Binders Are Essential

Physical Role:

Chemical Mechanism:
Binders work through hydrocolloid behavior: they absorb water, swell, create a gel matrix, then dry into a solid network that holds particles together.

Gum Tragacanth (Astragalus species)

Source: Dried sap from various Astragalus shrubs (Middle East, Iran, Turkey)

Chemical Composition:

Mechanism of Action:

  1. Dry state: Inactive powder
  2. Water contact: Polysaccharides hydrate and swell (~300% volume)
  3. Gel formation: Creates viscous gel matrix
  4. Drying: Water evaporates, polysaccharide network solidifies
  5. Final state: Hard, glassy matrix holding particles together

Binding Strength: Excellent (strongest natural gum for incense)

Pros:

Cons:

Gum Arabic (Acacia senegal, A. seyal)

Source: Dried sap from Acacia trees (Sudan, Sahel region)

Chemical Composition:

Mechanism of Action:
Similar to tragacanth but less gel-forming, more emulsifying:

  1. Dissolves/disperses in water
  2. Creates somewhat viscous solution
  3. Coats particles
  4. Dries into adhesive film

Binding Strength: Good (weaker than tragacanth)

Pros:

Cons:

Xanthan Gum (Bacterial polysaccharide)

Source: Produced by Xanthomonas campestris bacteria fermenting sugars

Chemical Composition:

Mechanism of Action:

  1. Rapidly hydrates in water
  2. Creates highly viscous gel (even at low concentrations)
  3. Pseudoplastic behavior (thins under shear stress)
  4. Dries into cohesive network

Binding Strength: Very good (surprisingly effective for incense)

Pros:

Cons:

Methylcellulose (Semi-synthetic)

Source: Chemically modified cellulose (wood pulp)

Mechanism:

Pros:

Cons:

Recommendation: Avoid for incense making

Comparative Analysis

BinderStrengthConcentrationCost (NZD/100g)AvailabilityTraditional Use
Gum TragacanthExcellent1.5-2%$30-50ImportYes (gold standard)
Gum ArabicGood2-3%$15-30Health shopsYes (common)
Xanthan GumVery Good1-1.5%$4-8SupermarketsNo (modern)

Recommendation:

Binder Application Techniques

Dry Sifting Method (Recommended):

  1. Mix all dry ingredients thoroughly
  2. Use fine-mesh sieve to add binder powder gradually
  3. Mix after each addition to prevent clumping
  4. Ensures even distribution

Why This Works: Dry binder distributed evenly throughout means uniform binding when water is added.

Pre-Gel Method (Advanced):

  1. Dissolve binder in small amount of warm water (creates gel)
  2. Add gel to dry ingredients
  3. Mix thoroughly

Aromatic Material Selection & Preparation

Categories of Aromatic Materials

1. Resins (Optimal for incense)

Why They Work:

Best Resins for Cones:

Frankincense (Boswellia spp.):

Frankincense (Boswellia spp.) resin
Frankincense (Boswellia spp.)

Benzoin (Styrax benzoin):

Benzoin (Styrax spp.) flowers and lev]aves
Benzoin (Styrax spp.)

Myrrh (Commiphora myrrha):

Myrrh (Commiphora spp.) resin
Myrrh (Commiphora spp.)

2. Spices (Excellent for incense)

Why They Work:

Best Spices:

Cinnamon (Cinnamomum verum or C. cassia):

Cinnamon (Cinnamomum spp.) dried bark and powdered dried bark
Cinnamon (Cinnamomum spp.)

Clove (Syzygium aromaticum):

dried Cloves (Syzygium aromaticum)
Cloves (Syzygium aromaticum)

Cardamom (Elettaria cardamomum):

Cardamom (Elettaria cardamomum) pods showing seeds inside
Cardamom (Elettaria cardamomum)

Star Anise (Illicium verum):

dried Star Anise (Illicium verum)
Star Anise (Illicium verum)

3. Dried Flowers & Herbs (Good with caveats)

Challenges:

Best Choices:

Lavender (Lavandula angustifolia) flower stalk and some leaves
Lavender (Lavandula angustifolia)

Lavender (Lavandula):

Rose Petals (Rosa):

Dries rose petals
Rose (Rosa spp.)

Dried Citrus Peel:

botanical drawing of Lemon (Citrus × limon)
Lemon (Citrus × limon)

Preparation Techniques

Grinding Spices:

  1. Use dedicated coffee grinder
  2. Work in small batches (1/4 cup maximum)
  3. Pulse 10-15 times until powder forms
  4. Sieve through fine mesh
  5. Re-grind any larger pieces
  6. Store in airtight container

Grinding Resins:

  1. Critical: Freeze for 2-3 hours (makes brittle)
  2. Remove from freezer, work quickly
  3. Grind in small batches
  4. Return to freezer if becoming sticky
  5. Sieve to ensure even consistency
  6. Store in freezer until use

Grinding Dried Flowers/Herbs:

  1. Ensure completely dry (crispy, not leathery)
  2. Remove stems if present
  3. Grind to flour-like consistency
  4. Multiple sieving may be needed
  5. Fine texture essential for good burn

Aromatic Formulation Principles

Scent Pyramid for Incense:

Unlike perfume, incense scent evolves during the burn:

Initial Phase (First 3-5 minutes):

Middle Phase (5-15 minutes):

Final Phase (Last 5 minutes + afterglow):

Formulation Strategy:
Balance all three phases:

Water Chemistry & Hydration

The Role of Water

Physical Functions:

  1. Hydrates binder: Activates polysaccharides
  2. Creates plasticity: Allows shaping
  3. Particle adhesion: Brings dry particles into contact
  4. Homogenisation: Distributes ingredients evenly

Chemical Functions:

  1. Swells plant cells: Helps ingredients integrate
  2. Activates mucilage: Natural binding compounds
  3. Dissolves soluble components: Creates cohesion

Water Quality Considerations

Tap Water:

Filtered Water:

Distilled Water:

Hydration Ratios

General Rule: Water volume ≈ Dry ingredient volume

By Weight:

Variables Affecting Amount:

Addition Technique

Gradual Addition Method:

  1. Start with 80% of calculated water
  2. Mix thoroughly
  3. Knead for 30-60 seconds
  4. Assess consistency
  5. Add remaining water in small increments
  6. Target: Clay-like, holds shape, not sticky

Why Gradual: Easier to add water than remove it. Once too wet, recovery is difficult.

Dough Consistency Assessment

Perfect Consistency:

Too Dry:

Solution: Add water by drops, knead thoroughly between additions

Too Wet:

Solution:

Advanced Formulation Principles

The Incense Formulation Matrix

Total Formula = 100%

Base (80-85%):

Aromatics (10-15%):

Binder (1.5-2.5%):

Water (60-70% of dry weight):

Example Formulation (Professional)

“Temple Meditation” Cone Formula:

Total Dry Ingredients: 10g

Base (82%):

Aromatics (15%):

Binder (3%):

Water:

Scaling Formulas

Small Batch (Testing):

Medium Batch (Personal Use):

Large Batch (Gifting/Selling):

Scaling Considerations:

Formulation for Specific Purposes

Meditative/Spiritual:

Energising/Uplifting:

Relaxing/Sleep:

Seasonal/Festive:

Shaping Techniques & Physics

Understanding Cone Geometry

Why Cones Burn Well:

Optimal Cone Proportions:

Why These Proportions:

Hand-Rolling Technique (Detailed)

The Physics:
Rolling creates a cone through controlled pressure gradient:

Step-by-Step:

  1. Create ball: Roll dough between palms until perfectly smooth (30-60 seconds)
  2. Position hand: Place ball on smooth, hard surface – Outer palm edge (pinkie side) flat on surface – Inner palm edge (pointer side) raised 15-20°
  3. Apply pressure: Fingertips: Light pressure (forms tip) – Palm centre: Moderate pressure (forms middle) – Heel of palm: Firm pressure (forms base)
  4. Rolling motion: Move hand forward and backward 10-15cm – Maintain angle consistently – Gradually increase pressure on thick end – Decrease pressure on thin end
  5. Refinement: Once cone-shaped, flatten base by pressing down – Perfect tip by gentle twisting between fingers – Smooth any irregularities with moistened fingers

Common Mistakes:

Mould Technique (Professional)

Cone Mold Types:

Advantages:

Disadvantages:

Mold Technique:

  1. Prepare mold: Lightly dust with base powder (prevents sticking)
  2. Portion dough: Slightly more than cavity volume
  3. First placement: Press into one half of mold
  4. Close mold: Align halves, press firmly together
  5. Compression: Apply firm, even pressure for 5-10 seconds
  6. Release: Open mold carefully, cone should release easily
  7. Cleanup: Smooth any “pinch marks” with wet finger

Optimal Dough Consistency for Molds:

Size Considerations

Small Cones (2-3cm height):

Medium Cones (3-4cm height):

Large Cones (5cm+ height):

Recommendation: Start with medium, master technique, then experiment with size.

Drying Science & Optimisation

Drying Thermodynamics

What Happens During Drying:

Phase 1 – Surface Evaporation (Day 1-2):

Phase 2 – Internal Moisture Migration (Day 2-5):

Phase 3 – Final Equilibration (Day 5-7):

Environmental Factors

Temperature:

Humidity:

Airflow:

Light:

Optimal Drying Setup

Location:

Surface:

Spacing:

Rotation:

Troubleshooting Drying Issues

Cracking:

Warping:

Mold Growth:

Won’t Dry Completely:

Determining Dryness

Tests:

  1. Weight test: Should feel very light
  2. Hardness test: No soft spots, hard throughout
  3. Sound test: Tap with fingernail – should sound hollow/hard, not dull/soft
  4. Break test: If expendable, break one – should snap cleanly, not bend

Target Moisture Content: <10%

Why This Matters: Damp cones:

Curing After Drying

What Is Curing:
Post-drying aging in sealed container to harmonise scents.

Process:

  1. Ensure cones completely dry (critical – moisture will mold)
  2. Place in airtight glass jar or tin
  3. Store in cool, dark place
  4. Let sit 1-4 weeks

Why It Works:

Result: Noticeably improved scent quality compared to freshly dried cones.

Professional Formulations

Formula 1: “Kyoto Temple” – Traditional Japanese-Style

Inspiration: Japanese temple incense – subtle, refined, contemplative

Dry Ingredients (Total: 20g):

Base (80%):

Aromatics (18%):

Binder (2%):

Water:

Scent Profile:

Burn Characteristics:

Cost (NZ): $4-6 per batch using makko, $2-3 using sandalwood/rosemary hybrid

Formula 2: “Southern Cross” – NZ Native-Inspired

Inspiration: New Zealand forest and coast, using local materials

Dry Ingredients (Total: 20g):

Base (82%):

Aromatics (15%):

Binder (3%):

Water:

Scent Profile:

Cultural Notes:

Cost (NZ): $1-2 per batch (mostly free ingredients + frankincense)

Formula 3: “Winter Solstice” – Festive Spice

Inspiration: Northern Hemisphere winter celebrations, adapted for NZ summer Christmas

Dry Ingredients (Total: 20g):

Base (82%):

Aromatics (15%):

Binder (3%):

Water:

Scent Profile:

Perfect For:

Cost (NZ): $2-3 per batch

Formula 4: “Forest Meditation” – Deep Woods

Inspiration: Deep forest experience – grounding, earthy, centring

Dry Ingredients (Total: 20g):

Base (80%):

Aromatics (17%):

Binder (3%):

Water:

Scent Profile:

Meditation Notes:

Cost (NZ): $2-4 per batch (depending on vetiver availability)

Formula 5: “Rose Garden” – Floral Luxury

Inspiration: English rose garden, romantic and elegant

Dry Ingredients (Total: 20g):

Base (84%):

Aromatics (13%):

Binder (3%):

Water:

Scent Profile:

Notes:

Cost (NZ): $3-5 per batch (or less if using garden roses)

Troubleshooting & Quality Control

Formulation Issues

Problem: Cones crumble when dry

Diagnostic Questions:

Solutions:

  1. Increase binder by 0.5-1%
  2. Knead for full 2 minutes
  3. Add slightly more water when mixing
  4. Ensure even binder distribution (sift thoroughly)

Testing: Make small test batch with increased binder before making full batch.

Problem: Cones won’t light or stay lit

Diagnostic Questions:

Solutions:

  1. Extend drying time (test by breaking one cone)
  2. Increase base to 85% (reduce aromatics to 10%)
  3. Use more combustible base (sandalwood > rosemary > pine)
  4. Check particle size (too fine = too dense)

Testing:

Problem: Burn too fast or flames

Diagnostic Questions:

Solutions:

  1. Pack dough more firmly when shaping
  2. Reduce base to 80%
  3. Increase resin content (frankincense, benzoin)
  4. Add less combustible aromatics (dried flowers)

Problem: Burns unevenly (tunnels or goes out mid-way)

Diagnostic Questions:

Solutions:

  1. Mix dry ingredients more thoroughly before adding water
  2. Knead dough for full 2 minutes
  3. Shape more carefully, ensuring even density throughout
  4. Rotate during drying to ensure even moisture loss

Problem: Harsh or unpleasant smell when burning

Diagnostic Questions:

Solutions:

  1. Source fresher, higher-quality materials
  2. Add more resin to slow burn (prevents overheating)
  3. Check storage conditions of ingredients
  4. Reduce proportion of harsh-burning aromatics

Quality Control Standards

Visual Inspection:

Physical Testing:

Burn Testing:

Batch Consistency:

NZ-Specific Applications

Using NZ Native Plants Respectfully

Critical Cultural Considerations:

Before Using Any Native Plant:

  1. Research its significance in rongoā Māori
  2. Understand if it’s a taonga (treasured plant)
  3. Consider whether your use is appropriate
  4. Seek guidance if unsure
  5. Always harvest respectfully and sustainably

Kawakawa (Piper excelsum):

leaves of kawakawa (Piper excelsum) plant
Kawakawa (Piper excelsum)

Mānuka (Leptospermum scoparium):

leaves and flowers of mānuka (Leptospermum scoparium)
Mānuka (Leptospermum scoparium)

Kānuka (Kunzea ericoides):

Kānuka (Kunzea ericoides) leaves and flowers
Kānuka (Kunzea ericoides)

Abundant NZ Materials (Freely Available)

Pine Needles (Pinus radiata):

Pine (Pinus radiata) showing needles and cones
Pine (Pinus radiata)

Rosemary (Rosmarinus officinalis):

Rosemary (Rosmarinus officinalis) in flower
Rosemary (Rosmarinus officinalis)

Eucalyptus Leaves (Various species):

Eucalyptus, showing leaves and flowers
Eucalyptus

NZ-Adapted Formulations

“Aotearoa Forest” Formula:

Base (82%):

Aromatics (15%):

Binder (3%):

Cost: <$1.50 per batch (mostly free ingredients) Scent: Forest walk in native bush with hint of lemon brightness

“Coastal Summer” Formula:

Base (84%):

Aromatics (13%):

Binder (3%):

Cost: $2-3 per batch Scent: Bright citrus, summery, refreshing

Sourcing in New Zealand

Local/Free:

Supermarkets (Countdown, New World, Pak’nSave):

Health Food Stores:

Online (NZ Suppliers):

International Import:

Conclusion

The craft of making incense cones represents a beautiful synthesis of ancient tradition, modern chemistry, and personal artistry. By understanding the combustion principles, binder chemistry, and formulation science, you can create sophisticated, professional-quality incense that rivals commercial products while using natural, wholesome ingredients.

This is a craft that rewards patience, precision, and practice. Your first batches will teach you about consistency, burn quality, and scent balance. Each iteration improves your understanding of how ingredients interact, how dough consistency affects the final product, and how to achieve the burn characteristics you desire.

Key Principles to Remember:

  1. Combustion quality depends on base material – Invest in good bases (sandalwood, makko) or prepare homemade carefully
  2. Binders are essential – Don’t skip or reduce below minimum
  3. Aromatics are accents – 10-15% is enough, more interferes with burn
  4. Drying cannot be rushed – Patience yields quality
  5. Formulation is iterative – Test, adjust, refine

For NZ Practitioners:

You have access to abundant free materials (pine, rosemary, citrus peels) that create excellent incense. While sandalwood and resins must be purchased, the investment is modest for the yield. And you can incorporate native botanicals respectfully, creating scents that reflect your unique environment.

Start simple. Master the basic formulation. Understand how each ingredient affects combustion and scent. Then experiment, create, and develop your own signature blends.

May your cones burn true, your scents be pleasing, and your practice be deeply rewarding.

Sources & References

  1. Sylliaasen, E. (2021). Traditional Incense Crafting Course. Northwest School of Aromatic Medicine. (Professional incense formulation)
  2. Tisserand, R., & Young, R. (2014). Essential Oil Safety (2nd ed.). Churchill Livingstone. (Aromatic compound safety and chemistry)
  3. Fischer-Rizzi, S. (1996). Complete Incense Book. Sterling Publishing. (Traditional incense methods)
  4. Lawless, J. (2013). The Encyclopedia of Essential Oils (2nd ed.). Conari Press. (Aromatic profiles)
  5. Green, J. (2007). The Herbal Medicine-Maker’s Handbook: A Home Manual. Crossing Press. (Herbal preparation fundamentals)
  6. Grieve, M. (1931). A Modern Herbal. Dover Publications. (Historical plant uses)
  7. Watt, M. (2011). Plant Aromatics: A Data & Reference Manual. (Technical data on aromatic compounds)
  8. BeMiller, J. N., & Whistler, R. L. (2009). Starch: Chemistry and Technology (3rd ed.). Academic Press. (Polysaccharide chemistry relevant to binders)
  9. Whistler, R. L., & BeMiller, J. N. (1997). Carbohydrate Chemistry for Food Scientists. Eagan Press. (Gum chemistry and hydrocolloids)
  10. Drysdale, D. (2011). An Introduction to Fire Dynamics (3rd ed.). Wiley. (Combustion science)
  11. Brooker, S. G., Cambie, R. C., & Cooper, R. C. (1987). New Zealand Medicinal Plants. Heinemann. (NZ native plant chemistry)
  12. Riley, M. (1994). Māori Healing and Herbal. Viking Sevenseas NZ. (Rongoā Māori traditional knowledge)
  13. Crowe, A. (2004). Which Native Tree? Penguin Books NZ. (NZ plant identification)
  14. New Zealand Plant Conservation Network. (2024). Native Plant Database. https://www.nzpcn.org.nz
  15. Mark, G. T., & Lyons, A. C. (2010). “Māori healers’ views on wellbeing: The importance of mind, body, spirit, family and land.” Social Science & Medicine, 70(11), 1756-1764.
  16. Royal New Zealand College of General Practitioners. (2022). Rongoā Māori Practice Guidelines. (Cultural considerations for using taonga plants)
  17. Groom, N. (1997). The New Perfume Handbook (2nd ed.). Springer. (Scent composition principles)
  18. Calkin, R. R., & Jellinek, J. S. (1994). Perfumery: Practice and Principles. Wiley. (Professional fragrance formulation)
  19. Poucher, W. A. (1991). Poucher’s Perfumes, Cosmetics and Soaps (9th ed.). Springer. (Technical formulation reference)
  20. Adams, R. P. (2007). Identification of Essential Oil Components by Gas Chromatography/Mass Spectrometry (4th ed.). Allured Publishing. (Aromatic compound analysis)

Rongoā Māori Disclaimer: This guide does not represent rongoā Māori preparation methods or traditional Māori medicine-making. Rongoā Māori is a complete healing system with its own protocols, karakia (prayers), and cultural practices that cannot be separated from te ao Māori (the Māori worldview). For rongoā Māori knowledge and treatment, please consult qualified rongoā practitioners through Te Paepae Motuhake or other appropriate Māori health services.

Medical Disclaimer: This guide is for educational purposes only and is not medical advice. The incense-making methods described are for creating ambient fragrance, not for therapeutic treatment of health conditions or spiritual/religious ceremonies outside the reader’s own cultural tradition. Always ensure 100% positive plant identification before use. When burning incense, always maintain proper ventilation—never burn in sealed rooms. Burning incense produces smoke and particulate matter that can irritate respiratory systems. If you are pregnant, nursing, have asthma, allergies, or any respiratory condition, consult with a qualified healthcare provider before making or burning incense. When using plants with cultural significance to Māori (particularly taonga plants like kawakawa and mānuka), approach with deep respect, seek appropriate permissions, educate yourself on cultural protocols, and seriously consider whether your intended use is culturally appropriate. Never harvest plants from conservation land without permits. Never commercialise sacred plants without extensive cultural consultation and permission. Keep all incense-making materials and burning cones away from children and pets. Never leave burning incense unattended. The combustion of plant materials produces carbon monoxide and other byproducts—ensure adequate ventilation at all times. Be aware that cats are particularly sensitive to many aromatic compounds and smoke. The author and publisher assume no liability for adverse reactions, injuries, property damage, cultural offence, fires, or losses resulting from the use of information in this guide. By using these methods, you accept all risks and responsibilities.

Note on Pricing: All prices mentioned in this guide are approximate and based on New Zealand suppliers as of January 2026. Prices vary by supplier, season, and market conditions. We recommend checking current prices with your local suppliers.

The Public Herbarium is built on a foundation of scientific integrity, transparency, and care. Research sources are referenced throughout the site wherever possible. Content creation is assisted by AI tools and carefully reviewed for accuracy.