RIGA Onion III K (large) Greenhouse Kit

Designed, engineered, and manufactured in Germany by Hoklartherm, a leading manufacturer of commercial and hobby greenhouses, with 28 years of experience, the RIGA III is truly a greenhouse by European standards. It is designed to be used to grow fresh vegetables, herbs and flowers in the middle of winter.

The RIGA III incorporates a number of unique design features to aid the hobbyist gardener’s horticultural endeavors. The unique ‘onion’ shape of the RIGA line provides for more interior headroom while providing a slope angle that snow and other debris slide off and wind easily blows over. The RIGA III provides the home gardener plenty of ventilation with one roof window, an oversized rear window and a locking Dutch-door. Heavy duty rubber seals are used in the windows, Dutch-door, and on the top and bottom of the side glazing panels to keep out wind and inclement weather and maintain your interior micro-climate.

Hoklartherm uses twin walled, polycarbonate glazing on all of the RIGA greenhouses. The 8mm side and 10mm front and back panels yield a greenhouse that is 40% cheaper to heat when compared to greenhouses paneled with glass or fiberglass glazing. This means the better insulated RIGA hobby greenhouse maintains a more stable interior climate, protecting your plants from cold snaps and other climate changes. The RIGA greenhouse’s extra wide panels (40”) transmit more warming sunshine with less ‘moving shade’ as the sun travels over your nursery. The polycarbonate panels also naturally diffuse light and offer tender vegetation UV protection.

There are a variety of ways to customize your greenhouse for optimal use. Optional shelves provide more growing and work space and because they hang from the ceiling offer more storage space underneath. Paraffin driven, auto window openers come with all RIGA greenhouses to help maintain ventilation and regulate temperature. The optional base is easily attached to the RIGA frame and adds up to five inches of headspace. You’ll be gardening in no time as assembly usually takes two people 6-10 hours to complete.

The RIGA IIIs Greenhouse Includes:

• 1 roof  window with opener
• 1 rear wall window
• A single top shelf 14" deep
• A regular shelf with flat poly sheet 25" deep
• A greenhouse base