Problems by plant
Each plant has its own short list of usual suspects. Starting from the plant is usually faster than starting from the symptom.
Tomato
21 common problems · 8 can be fatal
Pepper
15 common problems · 4 can be fatal
Cucumber
13 common problems · 6 can be fatal
Squash & Zucchini
13 common problems · 7 can be fatal
Potato
10 common problems · 4 can be fatal
Beans
10 common problems · 3 can be fatal
Lettuce & Greens
11 common problems · 2 can be fatal
Basil
8 common problems · 3 can be fatal
Roses
14 common problems · 3 can be fatal
Hydrangea
12 common problems · 4 can be fatal
Lawn & Grass
5 common problems · 1 can be fatal
Apple & Pear
8 common problems · 1 can be fatal
Citrus
8 common problems · 1 can be fatal
Houseplants
16 common problems · 3 can be fatal
Succulents & Cacti
8 common problems · 3 can be fatal
Orchids
10 common problems · 3 can be fatal
Maple & Shade Trees
10 common problems · 2 can be fatal
Boxwood & Shrubs
6 common problems · 2 can be fatal