This Tradescantia ‘Nanouk’ began showing necrotic spots in early fall. Given that variegated foliage plants are sensitive to high EC, a pour through substrate test was performed. The tradescantia substrate pH was 6.0 and the EC was 1.8 mS/cm (The target pH range is 5.8 to 6.2 and EC is 0.1 to 1.2). Therefore, we were within the recommended range. Plants were then submitted to the MSU diagnostic lab and they tested negative for fungal pathogens or potyvirus. Given that ‘Nanouk’ has much thicker leaves, it needs much less water. Therefore, Tradescantia ‘Nanouk’ should be grown more like a succulent or peperomia and kept between a watering level 2 and 3.
Roberto LopezAssociate Professor and Floriculture/Controlled Environment Extension Specialist, Michigan State University
Roberto G. Lopez is an Associate Professor and Floriculture/Controlled Environment Extension Specialist at Michigan State University. He has an appointment in research, teaching and extension. His area of expertise is; controlled environment specialty crop production; Lighting applications for greenhouses and indoor vertical production; light-emitting diodes; young plant propagation.