How does the spaced repetition system work?

Plant Reference tracks every plant you study across 5 mastery levels. When you answer correctly, the plant advances; when you struggle, it gets scheduled for review sooner. This scientifically-proven method ensures you focus your study time on the plants that need the most attention.

What makes each quiz format different?

Flashcards are self-paced visual learning with multiple photos per plant. Multiple Choice tests recognition with four answer choices, great for exam prep. Plant Parts builds nomenclature by assembling genus and species separately. Writing Test is the deepest recall — typing names from memory. Glossary Quiz covers professional terminology. Name Game makes learning fun with fast-paced matching mini-games.

Can I study just the plants I need for my exam?

Yes — the filter sidebar lets you narrow your study set by category, family, hardiness zone, native region, and dozens of other plant characteristics. You can also create custom plant sets, follow educational institution collections, or filter to just your favorites.

Do I need an account to use the study tools?

No — all 6 quiz formats work immediately without signing up. Creating a free account adds progress tracking, spaced repetition scheduling, badges, XP, study streaks, and the ability to save favorites and custom plant sets.

How are the plant photos sourced?

Every plant in the database includes real photographs showing the plant from multiple angles and in different seasons. Photos are curated to help you identify plants in real-world settings, not just studio conditions.

START LEARNING FREE

Your plant study hub

Choose from 6 quiz formats to study 8,674+ plants. No sign-up required to start learning.

8,674+ plants6 quiz formatsSpaced repetition50+ badges & XP

What can be studied?

Choose Your Study Method

Daily Mix

One smart session, built for you each day: your due reviews come first, your most-missed plants get another pass, and new plants from your sets keep the deck growing.

~5-minute sessionDue + weak spots + newFresh mix every day

8,674

Interactive Flashcards

8,674

Image-based cards with several photos per plant. Go at your own pace, flip to reveal the name, and build visual recognition through repetition.

Self-paced visual learningMultiple photos per plantSRS-powered scheduling

8,674

Multiple Choice Quiz

8,674

Self-paced multiple-choice questions from plant images. Take a quick ten or the full collection — built for exam and CPH prep.

Self-pacedImage-based questions50/50 hints

8,674

Plant Parts Challenge

8,674

Build a scientific name piece by piece, choosing genus and species separately. Difficulty adapts as your nomenclature improves.

Build names piece by pieceGenus + species separatelyProgressive difficulty

8,674

Writing Test

8,674

Type names from memory — no hints, no options. Choose genus, species, common names or all, and get spelling feedback on every answer.

Type from memoryGenus, species, or bothSpelling feedback

–

Glossary Quiz

–

Match definitions to terms and back again. The professional vocabulary of plant science, filterable by category for focused study.

Definition ↔ term matchingCategory filteringCertification prep

8,674

Name Game

8,674

Fast mini-games across three modes a session: match scientific names to common names and families, with colour-coded names to reveal patterns.

3 mini-games per sessionMatch names ↔ familiesFast-paced and fun

8,674

Printable Study Sheets

8,674

Study off screen: paper flashcards, photo test sheets and answer keys. Double-sided pages mirror for duplex printing — cut and quiz anywhere.

Double-sided flashcardsTest sheet + answer keyNo screen required

Featured sets

Curated collections — pick one to scope every study mode to it.

Recommended for you

Great places to start — small, approachable sets to learn first.

Leaderboard

START LEARNING FREE

Your plant study hub

Choose from 6 quiz formats to study 8,674+ plants. No sign-up required to start learning.

8,674+ plants6 quiz formatsSpaced repetition50+ badges & XP

What can be studied?

Choose Your Study Method

Daily Mix

One smart session, built for you each day: your due reviews come first, your most-missed plants get another pass, and new plants from your sets keep the deck growing.

~5-minute sessionDue + weak spots + newFresh mix every day

8,674

Interactive Flashcards

8,674

Image-based cards with several photos per plant. Go at your own pace, flip to reveal the name, and build visual recognition through repetition.

Self-paced visual learningMultiple photos per plantSRS-powered scheduling

8,674

Multiple Choice Quiz

8,674

Self-paced multiple-choice questions from plant images. Take a quick ten or the full collection — built for exam and CPH prep.

Self-pacedImage-based questions50/50 hints

8,674

Plant Parts Challenge

8,674

Build a scientific name piece by piece, choosing genus and species separately. Difficulty adapts as your nomenclature improves.

Build names piece by pieceGenus + species separatelyProgressive difficulty

8,674

Writing Test

8,674

Type names from memory — no hints, no options. Choose genus, species, common names or all, and get spelling feedback on every answer.

Type from memoryGenus, species, or bothSpelling feedback

–

Glossary Quiz

–

Match definitions to terms and back again. The professional vocabulary of plant science, filterable by category for focused study.

Definition ↔ term matchingCategory filteringCertification prep

8,674

Name Game

8,674

Fast mini-games across three modes a session: match scientific names to common names and families, with colour-coded names to reveal patterns.

3 mini-games per sessionMatch names ↔ familiesFast-paced and fun

8,674

Printable Study Sheets

8,674

Study off screen: paper flashcards, photo test sheets and answer keys. Double-sided pages mirror for duplex printing — cut and quiz anywhere.

Double-sided flashcardsTest sheet + answer keyNo screen required

Featured sets

Curated collections — pick one to scope every study mode to it.

Recommended for you

Great places to start — small, approachable sets to learn first.