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Free Practice Questions for Cert III Horticulture

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Key Facts: Cert III Horticulture Exam

100

Practice Questions

OpenExamPrep

17 units

11 core + 6 elective

training.gov.au

AQF 3

Qualification Level

ASQA

Competency

Assessment Basis

VET / RTO

12-18 mo

Typical Duration

RTOs

AHC30722

National Code

training.gov.au

Certificate III in Horticulture (AHC30722) is a nationally recognised Australian VET trade qualification delivered by Registered Training Organisations and regulated by ASQA. Rather than one final exam, it is competency-based: learners must be assessed Competent across 17 units (11 core and 6 elective) through written questioning, practical tasks and workplace evidence, usually over 12 to 18 months. The content spans plant identification and botany, soils and growing media, plant nutrition and fertilisers, pests, diseases and weeds (IPM), pruning, irrigation, turf and amenity horticulture, safe chemical handling and WHS, and plant propagation. Fees vary by RTO and state, with many places free or government-subsidised. This free prep includes 100 research-based practice questions with explanations and an AI tutor.

Sample Cert III Horticulture Practice Questions

Try these sample questions to review concepts for the Cert III Horticulture exam. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1In a botanical (scientific) name such as Eucalyptus globulus, what does the first word 'Eucalyptus' represent?
A.The species
B.The genus
C.The cultivar
D.The family
Explanation: Under binomial nomenclature, the first word is the genus (always capitalised) and the second word is the specific epithet (lowercase). Together they name the species, e.g. Eucalyptus globulus.
2How should a full botanical name be presented in printed horticultural text?
A.Both words lowercase and italicised
B.Genus capitalised and species lowercase, both italicised
C.Both words capitalised and underlined
D.Genus lowercase and species capitalised
Explanation: Convention is to capitalise the genus, write the specific epithet in lowercase, and italicise both (or underline when handwritten). For example, Grevillea robusta.
3A plant described as 'deciduous' has which characteristic?
A.Keeps its leaves all year
B.Sheds all its leaves seasonally, usually in autumn
C.Has needle-like leaves
D.Produces cones instead of flowers
Explanation: Deciduous plants drop all their leaves during a particular season, typically autumn, and re-grow them in spring. Evergreen plants, by contrast, retain foliage year-round.
4Which plant family does the genus Acacia (wattles) belong to?
A.Myrtaceae
B.Fabaceae (Leguminosae)
C.Proteaceae
D.Asteraceae
Explanation: Acacia is a legume in the family Fabaceae (Leguminosae). Like other legumes it can form root nodules with nitrogen-fixing bacteria, which helps improve soil nitrogen.
5Leaves arranged in pairs directly opposite each other on the stem are described as which leaf arrangement?
A.Alternate
B.Opposite
C.Whorled
D.Basal
Explanation: An 'opposite' arrangement has two leaves emerging at the same node on opposite sides of the stem. This contrasts with alternate (single leaves staggered along the stem) and whorled (three or more at a node).
6What is the primary function of the xylem tissue in a vascular plant?
A.Transport sugars from leaves to roots
B.Transport water and dissolved minerals upward from the roots
C.Store starch in the stem
D.Protect the plant from pests
Explanation: Xylem conducts water and dissolved mineral nutrients upward from the roots to the rest of the plant. Phloem, the other vascular tissue, transports sugars (photosynthate) from the leaves to other parts.
7During photosynthesis, which gas do plants take in and which do they release?
A.Take in oxygen, release carbon dioxide
B.Take in carbon dioxide, release oxygen
C.Take in nitrogen, release oxygen
D.Take in carbon dioxide, release nitrogen
Explanation: In photosynthesis plants absorb carbon dioxide and, using light energy and water, produce carbohydrates while releasing oxygen as a by-product. Respiration is the reverse, consuming oxygen and releasing carbon dioxide.
8A plant that completes its entire life cycle, from seed to seed, within one growing season is classified as which type?
A.Perennial
B.Biennial
C.Annual
D.Deciduous
Explanation: An annual germinates, flowers, sets seed and dies within a single season. A biennial takes two seasons, and a perennial lives for several years.
9Which of these is a distinguishing feature of a monocotyledon (monocot) such as a grass or palm?
A.Net-like (reticulate) leaf venation
B.Flower parts in multiples of four or five
C.Parallel leaf venation and one seed leaf
D.A taproot system
Explanation: Monocots typically have parallel leaf venation, a single cotyledon (seed leaf), fibrous roots, and flower parts in multiples of three. Dicots have net venation, two cotyledons and parts in fours or fives.
10The botanical genus Callistemon is commonly known by which name?
A.Bottlebrush
B.Grevillea
C.Tea-tree
D.Lilly pilly
Explanation: Callistemon species are commonly called bottlebrushes for their cylindrical, brush-like flower spikes. They are in the family Myrtaceae and are widely used in Australian amenity plantings.

About the Cert III Horticulture Exam

Certificate III in Horticulture (AHC30722) is a nationally recognised Australian VET qualification covering plant identification, soils and growing media, nutrition, Integrated Pest Management, pruning, irrigation, turf, safe chemical handling and propagation. It is competency-based, assessed across 17 units rather than by a single exam, and is the standard trade qualification for landscapers, gardeners, nursery and parks workers.

Exam sponsor: Registered Training Organisations (RTOs) regulated by the Australian Skills Quality Authority (ASQA). The requirements and fees below concern the certification or admission exam, separate from our free practice resources.

Assessment

Competency-based assessment across 17 units (11 core, 6 elective) combining written questioning, practical demonstrations, projects and workplace evidence; there is no single multiple-choice final exam

Time Limit

Course typically runs 12 months full-time or up to 18 months part-time

Passing Score

Competent / Not Yet Competent (no percentage mark) for each unit

Exam / Certification Fees

Included in RTO course fees; many places are free or government-subsidised, otherwise tuition fees vary by provider

Exam sponsor website

Fees, eligibility, and exam policies can change. Confirm them with the exam sponsor before applying or paying.

Our practice resources: topics covered

We aim to reflect publicly available exam outlines and topic information in our study resources. Coverage, format, and difficulty may differ from the actual exam, and we cannot guarantee that every detail is accurate or current. Confirm exam requirements, fees, and policies with the official exam sponsor.

14%

Plant Identification & Botany

Botanical nomenclature, plant families, leaf morphology, monocots vs dicots, photosynthesis, vascular tissue, and common Australian plants

11%

Soils & Growing Media

Soil texture and structure, pH and amendments, organic matter and mulch, CEC, AS 3743 potting media, and sodic clay treatment

11%

Plant Nutrition & Fertilisers

N-P-K and macronutrients, deficiency symptoms, controlled-release and organic fertilisers, micronutrients, and native phosphorus sensitivity

14%

Pests, Diseases & Weeds (IPM)

Integrated Pest Management, monitoring and thresholds, pests and beneficials, disease and Phytophthora, weeds, and herbicide selection

10%

Pruning Techniques

Pruning cuts and the branch collar, the three-cut method, tool hygiene, apical dominance, timing, crown thinning, and why topping is avoided

11%

Irrigation Systems

Drip and sprinkler systems, backflow prevention, valves and controllers, rain sensors, precipitation rate, filtration, fertigation, and zoning

9%

Turf & Amenity Horticulture

Warm- and cool-season grasses, the one-third mowing rule, turf nutrition, coring, thatch and topdressing, and establishing new turf

10%

Chemical Handling & WHS

Poison schedules and labels, Safety Data Sheets, withholding periods, PPE, the hierarchy of controls, spill response, storage, and spray drift

10%

Plant Propagation

Cuttings and clonal propagation, rooting hormone, grafting and cambium alignment, mist propagation, seed scarification, damping off, and hardening off

Preparing for the Cert III Horticulture Exam

What You Need to Know

  • Passing score: Competent / Not Yet Competent (no percentage mark) for each unit
  • Assessment: Competency-based assessment across 17 units (11 core, 6 elective) combining written questioning, practical demonstrations, projects and workplace evidence; there is no single multiple-choice final exam
  • Time limit: Course typically runs 12 months full-time or up to 18 months part-time
  • Exam / certification fees: Included in RTO course fees; many places are free or government-subsidised, otherwise tuition fees vary by provider Official sources

Using Our Practice Resources

  • Work through all 100 available questions
  • Review every answer and explanation
  • Track weak areas and revisit them
  • Use our AI tutor for tough concepts

Cert III Horticulture: Suggested Study Strategy

1Learn botanical names by genus and family - grouping plants such as Myrtaceae (Eucalyptus, Callistemon) and Proteaceae (Grevillea, Banksia) makes identification and care much easier
2Memorise the classic nutrient deficiency symptoms: uniform older-leaf yellowing (nitrogen), interveinal chlorosis on new growth (iron), and interveinal yellowing of older leaves (magnesium)
3Frame pest, disease and weed answers around the IPM hierarchy - monitor first, then cultural, biological and physical controls, with chemicals as a last resort
4Know your chemical-safety essentials: read the label, check the SDS, observe withholding periods, wear the right PPE, and remember elimination tops the hierarchy of controls
5For turf, remember the one-third mowing rule and which grasses are warm-season (couch, kikuyu, buffalo) versus cool-season (ryegrass, fescue)
6Complete all 100 practice questions and review every miss with the AI tutor, focusing on the heavier areas of plant ID and IPM

Frequently Asked Questions

Does Certificate III in Horticulture (AHC30722) have a single final exam?

No. AHC30722 is a competency-based VET qualification, so there is no single national multiple-choice exam. You are assessed as Competent or Not Yet Competent across 17 units using written questioning, practical demonstrations and workplace evidence.

What does the passing standard mean if there is no percentage score?

Competency-based training does not use a percentage mark. For each of the 17 units you must demonstrate that you can perform the skills and knowledge to the required standard, which is recorded as Competent or Not Yet Competent.

How many units are in AHC30722 and how long does it take?

The qualification requires 17 units of competency (11 core and 6 elective). It is typically delivered over about 12 months full-time, or up to 18 months part-time, depending on the RTO.

What topics does Certificate III in Horticulture cover?

It covers plant identification and botany, soils and growing media, plant nutrition and fertilisers, pests, diseases and weeds (IPM), pruning, irrigation, turf and amenity horticulture, safe chemical handling and WHS, and plant propagation.

How much does Certificate III in Horticulture cost?

Fees vary by Registered Training Organisation and state. Many places are fee-free or government-subsidised through state training initiatives, while other providers charge tuition. There is no separate national exam fee.

Is this free AHC30722 practice as useful as paid prep?

Yes. Our 100 practice questions cover the core trade-theory knowledge tested across the AHC30722 units, with a teaching explanation for every answer plus free daily AI tutor interactions. All content is free forever and updated for 2026.