HandTied, Arrangements, Cards, Gifts, Flowers, Weddings, Funerals, Balloons, Knebworth, Stevenage, Bouquets, Deliveries, Plants, Candles, Hertfordshire. The Greenhouse is located in the Knebworth area of Hertfordshire. There are at least 2 other listings in the SG3 postcode area. Florists in Hertfordshire SG3