Most Trusted Name in Greenhouses  •  Serving the Horticulture Industry since 1946

Hobby

 

  Aluminum Lean-To

  Enthusiast/Mini Pro

  Juliana  

  Home Gardener

  Hobby House

  Riga

  Gothic Arch

  American Classic

  Grand Hideaway

  Victorian

  Geneva

 
Commercial

  Cold Frames & High Tunnels

  Solarstar

  Quonset

  Appalachian

  Vail

  Classic

  Expansion Mansion

  Retail Greenhouses

  Teton

  Natural Ventilation

  Retractable Roof

  Greenhouse Range

 

Institutional

  Greenhouse Systems

  Level I  10-25 Students

  Level II  26-50 Students

  Level III  51-100 Students

  Level IV  100+ Students

 

International

  Greenhouse Ranges

  Supplies

  Protected Agriculture

 
Supplies

  Aquaculture/Aquaponics

  Benches

  Circulation Fans (HAF)

  Cooling

  Controls/Thermostats

  Coverings

  Doors

  Fertilizer Injectors

  Flooring

  Foggers

  Ground Cover/Crop Cover

  Heating

  Hydroponics

  Insect Screens

  Irrigation/Watering Systems

  Instruments

  Lighting

  Nutrients/Supplements

  Pots/Containers

  Propagation

  Shade Cloth

  Sterilizers/Mixers

  Sprayers

  Ventilation

  VOLUME/BULK SUPPLIES

 
Specialty Items

  Residential Pool  Enclosures

  Commercial Pool Enclosures

  Pool Cabanas

  Shadehouses

  Garden Sheds

  Custom Furniture

 

 

 

The Riga Greenhouse                                                The Riga XL Greenhouse

 

The Riga Greenhouse

Free Shipping

to the continental United States

 

  • The RIGA is truly a greenhouse by the European definition of a greenhouse - designed to be used to grow fresh vegetables, herbs and flowers in the middle of winter. While other so called “greenhouses” using less than 8 mm twin-wall polycarbonate, are considered to be Season Extenders, to be used when only a slight night frost might be expected during the spring or fall season. At best they can only be used to house established plants during the winter season.
  • Designed, engineered, and manufactured in Germany by Hoklartherm, a leading manufacturer of commercial and hobby greenhouses, sunrooms, pavilions, pool covers, home additions, and commercial building, with 28 years experience.
  • With a combination of strong materials and durable hardware, the Riga is by far the strongest greenhouse under $5,000.
  • The Riga offers more window and door ventilation than another units it is class.
  • The polycarbonate glazing on the Riga is German made and believed to be of superior quality then the much more common Polygal or GE glazing.
  • The Riga comes with an optional two layer shelving system with removable shelf inserts. This allows for tall plants (beans, tomatoes etc.).
  • The optional 6" high base frame (which is often used to increase the height of the roof), is 2-3" higher than most competitors.
  • One major advantage of the Riga's construction method is that the frame profiles are permanently attached to each other, and won't come loose over time due to wind pressures.
  • German engineering - guaranteed top quality!
  • Optional shelving: suspended shelving without braces underneath – therefore allowing for more storage space ( i.e. for a cart, wheelbarrow or long tools)
  • Optional top shelf hangs forward – easier to reach, but also does not block outside light from reaching bottom shelf.
  • Both shelves use twin-wall polycarbonate as the insert (the flat part) material, allowing for much better and more even light distribution through the greenhouses. Most other types of shelving are dark structures which do not let light through – or very badly at best.
  • The RIGA is attractive and beautiful to look at – fits well in to an upscale garden setting
    Buying a greenhouse is like buying a car, they vary in cost from cheap to very expensive, the RIGA is a class similar to a Volkswagen/Volvo – stronger, more durable and better insulated, and offers many more features than the better selling brands.
  • The RIGA offers the minimum insulation needed to grow plant year-round – others using less insulation cost too much to heat.
  • RIGA units are available in 5 sizes
  • We recommend you buy one size bigger than you planned.
  • RIGA IV, the largest one (9’8” wide x 14” long; 135 square feet) is our best selling unit (80%).
  • Come with DVD and written Assembly Instructions

  • Specifications:

  • Extremely heavy duty construction
  • First-class insulation: R or K-value 3.0
  • Warranty: Polycarbonate: 10 years; Frame: 15 years
  • Heavy duty Dutch Barn Door with keyed lock: 30" wide x 72" tall. 72” tall narrow unit /79” tall wide unit
  • Oversized Rear Wall window: 30" wide x 42" high with adjustment arm
  • Roof Window(s): 40" w x 24" d; with Automatic Window Opener
  • 8 MM UV coated twin wall
    polycarbonate over main body
  • 10 MM twin wall polycarbonate in front & back walls for extra strength
  • Inside walking height: 6’1” near shelves, 6’11” in the middle of the narrow unit and 7’6” high for a wide unit.
  • Assembly time: 2 people, 1 full day (3 makes it easier and reduces it to 6-8 hours (excluding any shelves)
  • Optional Items:

  • Base frame - 6” high: highly recommended. Attaches to the bottom of the greenhouse. Usually sits in the ground but can also be mounted on top of a wood, concrete or brick frame/wall to provide 5” of additional inside height.

  • Top shelving: Suspended shelving with polycarbonate inserts (for more light): 14” deep.
  • Regular height shelving: Suspended shelving with out braces, allows for larger equipment to be stored underneath, 25” deep
  • Two options: twin-wall polycarbonate inserts (flat), or heavy duty seed trays – to make starting seeds and transplanting easier.
  • Additional Roof Windows with Automatic Openers: recommended in areas where temperatures will reach over 95Ί F when still using the greenhouse (we also recommend you use shade cloth as well, especially during the summer).
  • Adjustable Metal Hooks: Set of 5 metal hooks. These are great for hanging lights, fans and flower baskets (heavier items)
  • Plastic hanger: Set of 10 hangers: These snap into the groves in the aluminum profiles (frame) and are used to attach twine/rope to, to support growth of tall plants (I.e. Tomatoes or beans etc.)
  •  

    EXC-Riga 77

    $ 2,560

    7'-8" Wide x 7' Long

    Includes: 1 roof window with opener and 1 rear wall window

    Base - $ 320

    ESC-RigaSTS - Single Top Shelf: 14" deep - $ 152

    ESC-RigaRSP - Regular Shelf with flat poly sheet: 25" deep - $ 180


    EXC-Riga 710

    $ 3,178

    7'-8" Wide x 10'-6" Long

    Includes: 1 roof window with opener and 1 rear wall window

    Base - $ 360

    ESC-RigaSTS - Single Top Shelf: 14" deep - $ 189

    ESC-RigaRSP - Regular Shelf with flat poly sheet: 25" deep - $ 252


    EXC-Riga 714

    $ 3,957

    7'-8" Wide x 14' Long

    Includes: 2 roof windows with opener and 1 rear wall window

    Base - $ 430

    ESC-RigaSTS - Single Top Shelf: 14" deep - $ 252

    ESC-RigaRSP - Regular Shelf with flat poly sheet: 25" deep - $ 351


    EXC-Riga 910

    $ 3,315

    9'-8" Wide x 10'-6" Long

    Includes: 2 roof windows with opener and 1 rear wall window

    Base - $ 395

    ESC-RigaSTS - Single Top Shelf: 14" deep - $ 189

    ESC-RigaRSP - Regular Shelf with flat poly sheet: 25" deep - $ 252


    EXC-Riga 914

    $ 4,270

    9'-8" Wide x 14' Long

    Includes: 2 roof windows with opener and 1 rear wall window

    Base - $ 550

    ESC-RigaSTS - Single Top Shelf: 14" deep - $ 252

    ESC-RigaRSP - Regular Shelf with flat poly sheet: 25" deep - $ 351


    EXC-Riga 917

    $ 4,959

    9'-8" Wide x 17'-2" Long

    Includes: 2 roof windows with opener and 1 rear wall window

    EXC-RDFEK - Extra Roof Window (recommended) - $ 215

    Base - $ 595

    ESC-RigaSTS - Single Top Shelf: 14" deep - $ 315

    ESC-RigaRSP - Regular Shelf with flat poly sheet: 25" deep - $ 450


    EXC-RDFEK - Door Frame extension Kit - 20" taller - $ 221

    EXC-ERW - Extra Roof Window (40" wide x 24" deep) - $ 215

    EXC-Rga-ADHK - Adjustable Metal Hooks (Set of 5) - $ 15

    EXC-Riga-MPH - Movable Plastic Hangers (Set of 10) - $ 15

    EXC-HDBST - Heavy Duty Black Seed Trays - $ 15

     

    The Riga XL Greenhouse

    • The RIGA Extra Large – 16 mm polycarbonate - is the largest commercial quality hobby-kit type greenhouse now available in the country
    • Designed, engineered, and manufactured in Germany by Hoklartherm, a leading manufacturer of commercial and hobby greenhouses, sunrooms, pavillions, pool covers, home additions, and commercial building, with 28 years experience.
    • The insulation factor is an incredible: R-2.0
    • With a combination of strong materials and durable hardware, the Riga is by far the strongest greenhouse of its size under $10,000.
    • The Riga XL offers 4 large roof windows - each with an automatic opener.
    • The Riga XL comes with 4 "L-shaped" anchor bars (which attach to the inside of the base profiles) to attach the greenhouse to a concrete or wood frame.
    • The polycarbonate glazing on the Riga is German made and believed to be of superior quality then the much more common Polygal or GE glazing.
    • One major advantage of the Riga's construction method is that the frame profiles are permanently attached to each other, and won't come loose over time due to wind pressures.
    • The Riga comes with an optional two layer shelving system with removable shelf inserts. This allows for tall plants (beans, tomatoes etc.).
    • Optional shelving: suspended shelving without braces underneath – therefore allowing for more storage space ( i.e. for a cart, wheelbarrow or long tools). Currently only shelving up to 17’ (RIGA V) is available for the RIGA XL. See other RIGA sizes for shelving details and pricing.
    • Optional top shelf hangs forward – easier to reach, but also does not block outside light from reaching bottom shelf.
    • Both shelves use twin-wall polycarbonate as the insert (the flat part) material, allowing for much better and more even light distribution through the greenhouses. Most other types of shelving are dark structures which do not let light through – or very badly at best.
    • The RIGA is attractive and beautiful to look at – fits well in to an upscale garden setting
    • Buying a greenhouse is like buying a car, they vary in cost from cheap to very expensive, the RIGA is a class similar to a BMW/Mercedes – stronger, more durable and better insulated, and offers many more features than the better selling brands.
    • The RIGA XL offers the maximum possible insulation currently available in a real greenhouse requiring the least amount of energy for its size: ~20,000 BTU (depends on your climate).
    • Comes with DVD and written Assembly Instructions

    Specifications:

    • Extremely heavy duty construction
    • First-class insulation: R-2.0
    • Warranty: Triple Wall Polycarbonate: 10 years – prorated after 5 years.
    • Two wide doors - Horse Barn style - 38" wide x 72" high - 1 in the front one in the back
    • 16 mm UV coated TRIPLE-wall Polycarbonate Glazing
    • 10 MM twin wall polycarbonate in front & back walls for extra strength
    • Interior area 10’ wide x 20’ long has a minimum of 6 feet to 10 feet in ceiling height.
    • Assembly time: 2 to 3 people: 2 days.

    Optional Items:

    • Top shelving: Suspended shelving with polycarbonate inserts (for more light): 14” deep. Maximum available length: up to 17 feet (see other RIGA sizes for shelving options)
    • Regular height shelving: Suspended shelving with out braces, allows for larger equipment to be stored underneath, 25” deep .Maximum available length: up to 17 feet (see other RIGA sizes for shelving options)
    • Two options: twin-wall polycarbonate inserts (flat), or heavy duty seed trays – to make starting seeds and transplanting easier.
    • Adjustable Metal Hooks: Set of 5 metal hooks. These are great for hanging lights, fans and flower baskets (heavier items)
    • Plastic hanger: Set of 10 hangers: These snap into the groves in the aluminum profiles (frame) and are used to attach twine/rope to, to support growth of tall plants (I.e. Tomatoes or beans etc.)

     

    EXC-Riga XL

    $ 8,995

    14'-2" Wide x 19'-10" Long x 10' High

    Includes: 4 ea. large roof windows: 37.5" W x 39.5" L

    2 ea. large Dutch style doors: 37.5" W x 74" H

    4 ea. Automatic Roof Openers


    EXC-Riga XL Kit

    $ 10,995

    14'-2" Wide x 19'-10" Long x 10' High

    Includes: 4 ea. large roof windows: 37.5" W x 39.5" L

    2 ea. large Dutch style doors: 37.5" W x 74" H

    4 ea. Automatic Roof Openers

     

    Accessories Include:

    1 ea. Dayton "Big Red" Heater - 220 Volt - 13,000 BTU

    1 ea. JD Manufacturing - 110 Volt - 20" Exhaust Vent 3400 CFM

    1 ea. JD Manufacturing control thermostat, single speed 115/230V - 10A/6

    1 Gama Sonic Solar Light

    1 ea. RIGA - 14' Top Shelf - 14" deep

    1 ea. RIGA - 14' Regular Shelf - 25" deep

    5 ea. Heavy Duty Black Seed Trays

    10 ea. Adjustable Stainless Steel Hooks: for lights or flower baskets

    10 ea. Plastic Hooks: for grow string for tomatoes or string bean