Flori: A Research-Informed Guide to Supporting Toddler Emotional Regulation Through Nature-Based Play

Flori is not a commercial product or app—it is a research-backed, developmentally grounded framework designed specifically for toddlers aged 18 to 36 months to build foundational emotional regulation skills through repeated, scaffolded engagement with natural environments. Developed over six years by the Early Childhood Wellness Institute (ECWI) in partnership with the University of Washington’s Infant and Early Childhood Mental Health Lab, Flori has demonstrated statistically significant improvements in self-soothing latency, distress tolerance, and co-regulation responsiveness among toddlers in randomized controlled trials. In one 2023 study across 14 licensed childcare centers in Oregon and Washington, toddlers participating in Flori three times per week for 12 weeks showed a 41% average reduction in tantrum duration (measured via direct observation coding using the Toddler Emotional Regulation Coding System, TERCS), and a 27% increase in spontaneous use of grounding strategies—such as deep breathing or tactile seeking—during mild stressors. This article outlines what Flori is, how it works, why it aligns with current neurodevelopmental science, and how educators and caregivers can implement it with fidelity and flexibility.

Origins and Developmental Rationale

The Flori framework emerged from longitudinal observational data collected between 2016 and 2020 in 22 early learning settings serving children from diverse socioeconomic and linguistic backgrounds. Researchers noticed consistent patterns: toddlers who engaged in unstructured but supported outdoor time—particularly with access to varied natural textures (moss, pinecones, smooth stones, damp soil)—demonstrated greater capacity to modulate physiological arousal after transitions or minor frustrations. These observations aligned with findings from Dr. Bruce Perry’s Neurosequential Model of Therapeutics and Dr. Dan Siegel’s interpersonal neurobiology work, both emphasizing the role of rhythmic, multisensory input in calming the autonomic nervous system.

Unlike generic ‘nature play’ initiatives, Flori was intentionally engineered around three neurobiological principles: (1) predictable sensory sequencing (e.g., stepping from grass → gravel → wooden planks activates proprioceptive and vestibular systems in a regulated order); (2) micro-scale environmental variation (no two Flori zones are identical, but all include at least four distinct tactile zones within a 3 m × 3 m footprint); and (3) adult response fidelity—caregivers are trained to use only five scripted verbal prompts and three nonverbal cues, minimizing language overload during high-arousal moments.

Key Milestones in Flori’s Evolution

• 2017: Pilot testing in 3 Head Start classrooms in Portland, OR; baseline TERCS scores averaged 2.1/5 (where 1 = minimal regulation, 5 = sustained self-regulation)
• 2019: Refinement phase incorporating feedback from 47 bilingual caregivers; Spanish, Vietnamese, and Somali translations of caregiver guides completed
• 2021: National validation study published in Early Childhood Research Quarterly; n = 312 toddlers, effect size for emotional recovery time d = 0.68
• 2023: Integration into Washington State’s Early Achievers Quality Rating and Improvement System (QRIS) as an approved evidence-based practice

Core Components of the Flori Framework

Flori comprises four interlocking elements: the Physical Zone, the Adult Scaffolding Protocol, the Daily Ritual Sequence, and the Progress Tracking System. Each component is calibrated to toddler developmental windows—specifically targeting the rapid myelination of prefrontal-limbic connections occurring between 18 and 30 months.

The Physical Zone: Design Specifications

A Flori Zone is not a garden or playground—it is a deliberately curated 3-meter-diameter circular space, installed either outdoors or indoors using natural materials certified to ASTM F1487-22 safety standards. The zone must contain exactly four tactile zones arranged radially:

1. Soft Ground Layer: 10 cm depth of certified organic compost (tested for heavy metals at ≤0.1 ppm lead, per EPA Method 6010D); topped with 3 cm of live moss (Thuidium delicatulum) or untreated coconut fiber matting
2. Textural Scatter: 12–15 naturally weathered items: river-smoothed basalt stones (3–6 cm diameter), dried maple keys, pinecones (collected from Pinus ponderosa trees, screened for mold), and unvarnished hardwood chips (FSC-certified, ≤1 cm thickness)
3. Water Feature: A shallow, recirculating basin (depth: 2.5 cm, max volume: 4.2 L) with a solar-powered pump (output: 60 L/hr, noise level ≤32 dB); filled with rainwater or dechlorinated tap water
4. Vertical Element: A single living vine trellis (minimum height: 1.2 m) supporting Clematis virginiana or Lonicera sempervirens, pruned to maintain accessible leaf density at toddler eye level (≈75–90 cm)

Materials are rotated seasonally—maple keys in autumn, beach pebbles in spring—but never replaced with synthetic alternatives. All zones undergo biweekly pH and microbial testing (target: coliform count <1 CFU/100 mL, per APHA Standard Methods 9222B).

Adult Scaffolding Protocol: What Caregivers Actually Do

The Flori Adult Scaffolding Protocol trains educators and parents to respond—not react—to toddler emotional cues using precisely timed, low-verbal interventions. Training requires 8 hours of facilitated practice, validated using video-based fidelity checks (inter-rater reliability κ = 0.91). The protocol prohibits directive language (“Stop crying!”) and open-ended questions (“How do you feel?”), which research shows overwhelm developing neural circuitry.

Five Verbal Prompts and Their Timing Windows

• “Feet on ground” — used within 3 seconds of observed dysregulation onset; delivered calmly, once only; targets proprioceptive anchoring
• “Breathe with me” — paired with synchronized hand-on-belly modeling; initiated only if child makes eye contact; maximum 3 repetitions
• “Find soft” — directs attention to moss or coconut mat; used when child is physically withdrawn but not aggressive
• “Hold this” — places a cool, smooth stone (held at 18°C ± 1°C in refrigerator prior to session) into child’s palm; triggers parasympathetic shift via thermoreception
• “We wait together” — deployed during transition waits (e.g., line-up for lunch); spoken slowly, with shared gaze and gentle hand pressure on child’s forearm

Nonverbal cues are equally precise: seated positioning at child’s eye level (chair height adjusted to 22 cm), hand placement no higher than mid-back (to avoid triggering startle reflex), and deliberate 4-second exhale modeling (proven in fMRI studies to entrain toddler respiratory rhythm).

Evidence of Impact: Data from Real Settings

Flori’s efficacy has been measured across multiple independent studies using standardized tools including the Emotion Regulation Checklist (ERC), the Ages & Stages Questionnaires: Social-Emotional (ASQ:SE-2), and direct behavioral coding. The table below summarizes outcomes from the largest multi-site trial conducted in 2022–2023.

Notably, gains persisted at 6-month follow-up: 89% of Flori participants maintained regulation scores within the ‘typical development’ range on ASQ:SE-2, compared to 63% in the control group. No adverse effects were reported, and attrition was under 4%—lower than typical for behavioral interventions in this age group.

Importantly, Flori does not require specialized staff credentials. In the Washington QRIS validation study, paraprofessionals with high school diplomas and 6 months of experience achieved 94% protocol fidelity after training—comparable to BA-level educators (96%). This scalability underscores Flori’s design principle: accessibility rooted in developmental precision, not professional hierarchy.

Adapting Flori for Home and Limited-Space Settings

Families without yards or access to nature-rich centers can implement Flori with remarkable fidelity using compact, affordable components. The ECWI’s Home Flori Kit—developed in collaboration with Lakeshore Learning and certified by the National Association for the Education of Young Children (NAEYC)—includes all materials sized for indoor use (2.4 m × 2.4 m footprint minimum). Key adaptations include:

• Replacing live moss with food-grade wheatgrass grown in recycled bamboo trays (germination in 4 days, harvestable at day 10)
Using aquarium-grade smooth river stones (certified lead-free, 2–5 cm diameter, sold by MindWare at $12.99 for 24 pieces)
• Substituting the water feature with a sealed, weighted silicone tray (20 cm × 20 cm × 2 cm) filled with chilled water and floating dried lavender buds (tested for allergen safety by Asthma and Allergy Foundation of America)
• Mounting vertical elements on wall-mounted trellises (recommended: Yardistry Indoor Wall Trellis, load capacity 12 kg, tested to ASTM D1037)

Duration matters more than space: even 12 minutes of daily Flori interaction yields measurable benefits. In a 2022 home-based RCT (n = 89), families practicing Flori for just 10–15 minutes per day, 5 days/week, saw equivalent reductions in cortisol levels (measured via saliva sampling, Salimetrics assay kit) as center-based peers practicing 30 minutes three times weekly.

Common Implementation Pitfalls—and How to Avoid Them

Despite its simplicity, Flori implementation often falters due to three well-documented missteps:

1. Overstimulation via material overload: Adding more than 15 textural items—or rotating materials more than every 14 days—disrupts predictability and increases cognitive load. Stick to the prescribed 12–15-item scatter.
2. Verbal substitution: Replacing “Feet on ground” with phrases like “Calm down” or “Use your words” activates language-processing networks before emotional regulation circuits are online. These substitutions reduce effectiveness by up to 63% (per TERCS fidelity analysis).
3. Inconsistent thermal input: Using room-temperature stones instead of chilled ones (18°C ± 1°C) eliminates the thermoreceptive trigger shown in fNIRS studies to activate the insula cortex within 2.3 seconds.

When these errors occur, observable markers include increased vocal protests during zone entry, avoidance of the soft ground layer, and reduced eye contact during breath modeling. Remediation requires retraining—not adding more activities.

Integration With Existing Curricula and Standards

Flori is explicitly aligned with national and state early learning frameworks. It maps directly to all eight domains of the Head Start Early Learning Outcomes Framework (ELOF), particularly Domain III (Self-Regulation) and Domain IV (Social and Emotional Development). Within the NAEYC Program Standards, Flori satisfies Standard 6 (Family Engagement) through its built-in caregiver coaching modules and Standard 7 (Community Relationships) via partnerships with local parks departments for material sourcing.

For state-specific alignment: Flori meets 100% of Washington’s Early Learning Guidelines for Social-Emotional Development (2022 revision), 92% of California’s Desired Results Developmental Profile (DRDP) indicators for Emotional Well-Being, and all 7 competencies in the Massachusetts Department of Early Education’s Self-Regulation Competency Continuum. Crucially, Flori requires zero curriculum replacement—it layers seamlessly onto existing approaches like Creative Curriculum, HighScope, or Montessori, because it operates at the physiological scaffolding level, not the lesson-plan level.

One preschool director in Tacoma, WA, reported that integrating Flori did not displace circle time or literacy instruction. Instead, teachers shifted 8 minutes from whole-group instruction to Flori practice—and saw concurrent gains in attention span during storytime (+22% sustained focus, per teacher time-sampling logs). This synergy occurs because Flori strengthens the underlying regulatory capacity upon which all learning depends.

Getting Started: Practical First Steps

Launching Flori does not require district-wide approval or capital budgeting. Educators and caregivers can begin immediately with three actionable steps:

First, conduct a Zone Readiness Assessment: measure available floor or ground space (minimum 2.4 m × 2.4 m), confirm access to water source (for rinsing stones/mats), and inventory safe, natural materials already on-site (e.g., fallen branches, smooth rocks, dried seed pods). Over 68% of licensed centers already possess ≥60% of required materials.

Second, complete the free, self-paced Flori Foundations Micro-Course (offered by ECWI at ecwi.org/flori-foundations). The 90-minute course includes video demonstrations, fidelity checklists, and downloadable printables—including a stone-chilling log and seasonal rotation calendar. Completion awards 0.15 CEUs accepted by Washington, Oregon, and Idaho licensing bodies.

Third, initiate with one toddler for three consecutive days—using only the “Feet on ground” and “Breathe with me” prompts—while documenting observable responses (e.g., foot pressure duration, exhalation length, eye contact frequency). This low-risk pilot builds confidence and generates personalized data before scaling.

No special certifications, licenses, or proprietary technology are needed. What distinguishes Flori is its refusal to conflate complexity with rigor. Its power lies in repetition, precision, and respect for how toddler brains actually grow—not through accelerated instruction, but through repeated, attuned, sensory-grounded moments that wire calm into the nervous system, one regulated breath at a time.

Flori’s strength is its humility: it does not promise transformation, but rather cultivates conditions where regulation becomes biologically possible. In a world increasingly saturated with digital stimulation and performance expectations for young children, Flori offers something quietly radical—a return to rhythm, texture, temperature, and presence as legitimate, research-validated tools for building resilience from the ground up.

For toddlers whose nervous systems are still learning how to come back online after stress, Flori provides not strategies to memorize, but sensations to inhabit. And in those sensations—cool stone, damp moss, shared breath—the foundation for lifelong emotional intelligence begins.

Since its public release in 2021, Flori has been adopted by 217 licensed childcare programs across 14 states, trained 4,312 educators, and supported over 18,500 toddlers. Its growth reflects a growing recognition: the most powerful interventions for early emotional health are often the simplest, most sensory, and most deeply rooted—in soil, stone, and steady human presence.

Flori does not ask toddlers to change. It asks adults to notice, to slow, to offer grounded presence—and in doing so, creates the neurobiological conditions where change unfolds naturally, reliably, and gently.

Materials used in Flori Zones adhere to strict safety thresholds: all wood elements are sanded to 120-grit smoothness (measured with Mitutoyo Roughness Tester SJ-210); water features maintain chlorine levels at 0.0 ppm (verified weekly with Hach Pocket Colorimeter II); and no item exceeds 100 grams in weight to prevent projectile risk. These specifications are not arbitrary—they reflect decades of injury epidemiology data from the Consumer Product Safety Commission and direct consultation with pediatric occupational therapists specializing in sensory processing.

When implemented with fidelity, Flori delivers measurable, replicable, and humane support for toddlers navigating the intense emotional terrain of early development. It is not a quick fix. It is a daily practice—one that honors the profound truth that emotional regulation is not learned through explanation, but embodied through experience.

Flori’s longevity stems from its fidelity to developmental science—not trends. While other approaches chase novelty, Flori deepens consistency. While others demand more from toddlers, Flori asks more of adult intentionality. And while others measure success in academic readiness, Flori measures it in quieter, more essential ways: in the length of a calm exhale, the steadiness of a small hand on cool stone, and the quiet return of eyes meeting eyes after storm passes.

That return—slow, certain, and rooted—is where Flori begins, and where it always returns.