Greenhouses NZ for Garden & Backyard Growing

Shop greenhouses in NZ for backyard growing, seed starting, and year-round plant protection. At Steelmates, our range includes everything from compact home greenhouses to larger structures for serious gardeners, with options to suit different spaces, budgets, and growing goals.

Whether you want better temperature control, protection from wind and rain, or a longer growing season, a greenhouse can help create a more productive outdoor growing environment. Browse our full range of garden greenhouses, including polycarbonate greenhouses, glasshouses, tunnel greenhouses, plastic greenhouses, and mini greenhouses.

From beginner-friendly models to more premium greenhouse kits, Steelmates offers practical solutions for New Zealand conditions, with a range of sizes and styles to help you grow vegetables, herbs, seedlings, and flowers with more confidence.

  • A Warmer Start

    Nurture seedlings, herbs and vegetables with insulating panels that retain warmth and soften sunlight—creating a gentler environment for everyday growing.

  • Grow Beyond Summer

    Insulating twin-wall panels help retain warmth, giving seedlings a head start and supporting growing into the cooler months.

  • Gentler Light for Young Plants

    Light-diffusing panels spread sunlight more evenly, reducing harsh glare and shadows around delicate seedlings and leafy plants.

  • Tough Panels, Less Worry

    Impact-resistant polycarbonate handles everyday knocks without shattering like glass—reassuring when gardening around tools, children or pets.

  • Let Your Plants Shine

    Bring natural light and timeless style to your garden with a beautiful glasshouse that showcases your plants and makes tending them a pleasure.

  • Make the Most of Daylight

    Clear glass admits abundant natural light, helping plants make the most of shorter days and brightening your growing space.

  • Clarity That Lasts

    Glass glazing stays clear without yellowing in sunlight, preserving light transmission and views of your plants season after season.

  • Easy to Keep Clean

    Smooth, scratch-resistant glass makes routine cleaning straightforward, helping remove dirt and algae that can block valuable sunlight.

  • Hexagonal Glass Greenhouse with 6mm PC Roof Aluminium Greenhouses Steelmates

    A Garden Feature to Enjoy

    Elegant glazing and a classic frame turn your growing space into an attractive focal point, showcasing the plants you nurture.

  • Let Your Plants Stretch Further

    Create a productive kitchen garden for less, with generous growing space and practical shelter for your favourite vegetables, berries and seasonal crops.

  • More Growing Space for Less

    Cover a generous vegetable patch without a large upfront investment, leaving more of your budget for plants, compost and irrigation.

  • Room for Your Kitchen Garden

    Spacious tunnel layouts accommodate rows of vegetables, letting you grow a wider selection of fresh produce for the family.

  • Easy Access for Everyday Gardening

    Walk-in designs give you room to water, weed and harvest, with accessible openings to help manage airflow on warmer days.

  • Refresh the Cover, Keep Growing

    Separately sold replacement covers let you renew a weathered tunnel while keeping a serviceable frame, helping extend its useful life.
Mini frame greenhouse 99cm L x 60cm W x 31 H - AI107  Steelmates

Mini greenhouse

Mini Greenhouses, Big Growing Potential

Make room for more growing, even in a small garden. Our mini greenhouses provide a sheltered space for seedlings, herbs and vegetables, with compact and walk-in options to suit your space.

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2 Tier Aluminium Plant Staging Shelf for Greenhouse 1200 x 500 x 750mm  Steelmates

Greenhouse Shelving & Accessories

Little Extras. More Growing Possibilities.

Make more of your growing space with practical greenhouse accessories. From shelving and shade covers to watering essentials and replacement panels, find useful additions to keep your greenhouse organised and your plants cared for.

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Explore what the gardeners love

From newly released favorites to tried-and-true best sellers—these are the garden picks people are reaching for this season.

Raised Planter Boxes/ Planter Box L100 x W40 x H80cm

Raised Planter Boxes/ Planter Box L100 x W40 x H80cm

$79.00

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Modern Aluminium Frame Sunroom with Sliding Doors

Modern Aluminium Frame Sunroom with Sliding Doors

From $4,799.00

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Fiberglass Plant Support Stakes with Adjustable Clips for Tomato & Vine Plants

Fiberglass Plant Support Stakes with Adjustable Clips for Tomato & Vine Plants

$15.00

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Garden Tool Storage Organizer with Wheels – Multi-Function Metal Rack

Garden Tool Storage Organizer with Wheels – Multi-Function Metal Rack

$119.00

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Wheeled Climbing Planter Box with Trellis

Wheeled Climbing Planter Box with Trellis

From $29.00

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Modular Outdoor Compost Bin – Stackable Garden Composting Box for Organic Waste Recycling

Modular Outdoor Compost Bin – Stackable Garden Composting Box for Organic Waste Recycling

From $79.00

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Garden Tool Storage Box 16.6L Portable Organiser

Garden Tool Storage Box 16.6L Portable Organiser

$89.00

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Hanging Yellow Sticky Trap Ball Outdoor Garden Fruit Fly Catcher

Hanging Yellow Sticky Trap Ball Outdoor Garden Fruit Fly Catcher

$2.90

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Heavy Duty Metal Garden Arch Trellis for Climbing Plants  Steelmates

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ALUMINUM-COATED ZINC SHEET GARDEN BED ROUND CORNER 82x322x63CM

ALUMINUM-COATED ZINC SHEET GARDEN BED ROUND CORNER 82x322x63CM

$289.00

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Rolling Lawn Dethatcher Rake with Wheels

Rolling Lawn Dethatcher Rake with Wheels

$69.00

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Garden Claw Gloves Waterproof Latex-Coated Gardening Gloves

Garden Claw Gloves Waterproof Latex-Coated Gardening Gloves

$11.90

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Thickened Wear-Resistant Foam Knee Pads Non-Slip Waterproof Safety Knee Protection (1 Pair)

Thickened Wear-Resistant Foam Knee Pads Non-Slip Waterproof Safety Knee Protection (1 Pair)

$9.00

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Grow More, Garden Easier

From First Seed to Fresh Harvest.

From sowing and watering to pruning and plant protection, discover practical tools and supplies to make everyday gardening easier and help your garden thrive.

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Find the Right Greenhouse for Your Space

Choosing the right greenhouse in NZ depends on how much space you have, what you want to grow, and how much protection you need through the seasons. A compact greenhouse can be ideal for patios and smaller backyards, while larger structures give you more room for vegetables, seed trays, climbing plants, and year-round growing projects.

Explore Different Types of Greenhouses

Our collection includes several greenhouse styles to suit different needs. Polycarbonate greenhouses are popular for their durability, insulation, and diffused light. Glasshouses offer a premium look with excellent light transmission. Tunnel greenhouses are a practical option for larger growing areas, while plastic greenhouses and mini greenhouses are well suited to lighter-duty or smaller-space gardening.

Why Home Gardeners Use Greenhouses

A greenhouse helps create a more stable growing environment by improving protection from wind, heavy rain, and sudden temperature changes. It can help with seed starting, extending the growing season, and giving vegetables, herbs, and flowers a better chance to thrive. For many home gardeners, a greenhouse also makes it easier to grow more consistently throughout the year.

Greenhouses for New Zealand Conditions

New Zealand weather can change quickly, so it is important to choose a greenhouse that suits your location and intended use. A well-designed greenhouse can give you more control over airflow, warmth, and plant protection while fitting neatly into your backyard or garden layout. Whether you are setting up your first greenhouse or upgrading to a larger structure, our range is designed to suit a wide variety of home growing needs.

Shop Greenhouses NZ Wide

Browse our full range of garden greenhouses in NZ to find the right option for your space. Whether you are comparing polycarbonate greenhouses, looking for a premium glasshouse, or need a practical tunnel greenhouse for larger growing areas, Steelmates makes it easy to explore different styles in one place.