- Agastache ‘Black Adder’ – Downy Mildew
- Agastache ‘Golden Jubilee’ – Downy Mildew
- Alstroemeria – INSV (impatiens necrotic spot virus)
- Anemone – Foliar Nematodes
- Argyranthemum – Crown Gall
- Assorted hosts – thrips feeding injury
- Aster – lacebug injury
- Azalea – broad mite injury
- Azalea – Cylindrocladium mycosphaerella leaf disease
- Basil – Downy Mildew
- Basil – Fusarium Wilt
- Basil – Tomato Spotted Wilt Virus (TSWV)
- Begonia – Fusarium foetens
- Begonia ‘Rieger’ – INSV (impatiens necrotic spot virus)
- Begonia ‘Rex’ – Powdery Mildew
- Calibrachoa – Cercospora Leaf Spot
- Calibrachoa – Powdery mildew
- Calibrachoa – Sclerotinia
- Calibrachoa – Tobacco Mosaic Virus (TMV)
- Calibrachoa – Black root rot on liners
- Calibrachoa – Black root rot
- Calibrachoa – Pythium
- Chrysanthemum – chrysanthemum white rust
- Chrysanthemum – Fusarium stem rot
- Chrysanthemum – injury at stem base due to celery leaf tier
- Chrysanthemum – leaf miner
- Cineraria – new rust disease
- Cineraria – Tomato Spotted Wilt Virus (TSWV)
- Cleome – Downy Mildew
- Cleome – Sclerotinia crown rot
- Coleus – Downy Mildew on a garden coleus
- Coleus – Downy Mildew flecks on foliage
- Coleus – Downy Mildew conidia
- Coleus – Downy Mildew Sporulation on ‘Red Velvet’ cultivar
- Coleus – Downy Mildew
- Coleus – Downy Mildew
- Coleus – Downy Mildew
- Coleus – Downy Mildew causing foliage “twisting”
- Coleus – Downy Mildew causing leaf drop
- Coleus – Downy Mildew on a seed-grown coleus
- Coleus – Downy Mildew causing leaf curling and dead leaf patches
- Coleus – Pythium root rot
- Coreopsis – Rhizoctonia and Fusarium stem and root rot
- Cyclamen – Fusarium wilt
- Cyclamen – INSV (impatiens necrotic spot virus)
- Cyclamen – leaf distortion from low boron
- Digitalis – Downy Mildew
- Echeveria – Fusarium crown rot
- Euphorbia – ethylene injury
- Garden mum – closeup of Rhizoctonia on leaves
- Garden mum – Rhizoctonia foliar blight
- Geranium – Botrytis
- Geranium – Fe/Mn toxicity
- Geranium – Injury from Kontos Application
- Geranium – Oedema
- Geranium – Rust
- Gerbera – Powdery Mildew
- Geranium – Pythium Root Rot
- Geranium – Xanthomonas Bacterial Blight
- Hedera helix Ivy – Colletotrichum Anthracnose
- Hellebore – Foliar nematodes
- Hosta – Tobacco Rattle Virus (TRV)
- Hosta – ‘Francee’ with Fusarium Root And Crown Rot
- Hosta – ‘Sum and Substance’ with Tobacco Rattle Virus
- Hosta – ‘Gold Edger’ with Hosta Virus X
- Hosta – ‘Golden Tiara’ with Hosta Virus X
- Hosta – with Impatiens Necrotic Spot Virus
- Hoya – INSV (impatiens necrotic spot virus)
- Hydrangea – Botrytis
- Impatiens – Downy Mildew
- Impatiens (Double) – Downy Mildew
- Impatiens (Balsam) – Downy Mildew
- Impatiens (Bounce) – Cercospora Leaf Spot
- Ivy – Phytophthora crown rot
- Lamiastrum – cyclamen mite injury
- Lobelia – Sclerotinia sclerotiorum
- Mum – Brown Rust
- Mum – Crown Gall
- Mum – Fusarium wilt
- Mum – Pythium root rot
- Mum – Rhizoctonia root rot
- New Guinea impatiens – cyclamen mite injury
- Pansy – Phytophthora crown rot
- Phormium – Colletotrichum
- Poinsettia – Alternaria leaf spot
- Poinsettia – fungus gnat injury at stem base
- Poinsettia – Lewis mite injury
- Poinsettia – Lewis mite injury (close up)
- Poinsettia – Phytophthora crown rot
- Poinsettia – Rhizoctonia root rot
- Poinsettia – Thielaviopsis basicola
- Ranunculus – Tobacco Spotted Wilt Virus
- Rose – Black Spot
- Rose – ‘Knock Out’ Downy Mildew
- Rose – Powdery mildew
- Rose – Downy Mildew
- Rose – Rose Rosette Virus
- Saintpaulia – INSV (impatiens necrotic spot virus)
- Saintpaulia – Phytophthora nicotiana
- Senecio – ‘Angel Wings’ INSV (impatiens necrotic spot virus)
- Sunflower – Downy Mildew
- Sunflower – Sclerotinia
- Swedish ivy – broad mite injury
- Swedish ivy – INSV (impatiens necrotic spot virus)
- Torenia – Powdery Mildew
- Verbena – Ammonium Toxicity
- Viola – Thielaviopsis root rot
- Wasabi Microveggies – Downy Mildew