Many factors in a greenhouse can contribute to the spread of disease. The warm temperatures and humid conditions make the ideal environment for diseases to thrive. Depending on the type of irrigation used, the foliage of plants may be wet for extended periods of time, which also contributes to disease development. Growers often space plants in close proximity to efficiently use their square footage, but this can also decrease airflow between plants and spread disease faster.
Resistant to powdery mildew
Stays in bloom all season long
Strong flower power
Bred for resistance to septoria leaf spot
Clean, hairy foliage
Ideal for mass planting or as perennial border
Resistant to black spot, powdery mildew, rust, downy mildew, and cercospora
Flower power
Fragrant, yellow flowers
Resistant to mildew
Sweetly fragrant, lavender-pink flowers
Foliage stays vibrant green
Resistant to tobacco mosaic virus (TMV)
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Requires minimal pinching or plant growth regulators
Heuchera ‘Northern Exposure Lime’ (Terra Nova Nurseries)
8
of 17
Helianthus ‘Suncredible Yellow’ (Proven Winners)
9
of 17
Gerbera ‘Garvinea Sweet Blaze’ (HilverdaFlorist)
10
of 17
First Editions FlowerFull Smooth Hydrangea (Bailey Nurseries)
11
of 17
Distylium ‘Bayou Bliss’ (Plant Development Services)
12
of 17
Daphne Perfume Princess Series (Anthony Tesselaar Plants)
13
of 17
Carex laxiculmis ‘Hobb’ (Hoffman Nursery)
14
of 17
Buxus ‘NewGen Liberty Belle’ (Saunders Genetics LLC)
15
of 17
Brunnera ‘Jack of Diamonds’ (Walters Gardens)
16
of 17
Berberis ‘Sunjoy Todo’ (Spring Meadow Nursery)
17
of 17
Amsonia ‘Butterscotch’ (Emerald Coast Growers)
Due to the ease with which disease can spread in a greenhouse, breeders are more focused than ever on developing varieties that are disease-resistant. Many new varieties have disease-resistance bred into the genetics, and breeders acknowledge that this is one of their goals with new products. Check out the slideshow for a closer look at some new disease-resistant varieties.
Erika Walls is a journalist who loves writing about business and finance news. She's been working in the industry for over 15 years, and she's published hundreds of articles on everything from the latest IPO to the hottest new stock pick.