Yellow tomato plants cauliflower discolords

Asked June 18, 2020, 8:06 AM EDT

My tomato plants look sick what canI do

Multnomah County Oregon

1 Response

The upper leaves of your tomato plants look nice and green, and I don't see signs of disease. Our weather in June was cool and wet. Tomatoes like warm temperatures - soil temperatures of 65°. When its cool and wet the tomatoes grow slowly. The older, lower leaves yellow and look diseased. When the weather warms, as it's doing now, tomatoes rapidly improve. To extend your tomato season you can use a hoop house with plastic draped over hoops when planting in cool weather. The hoop house will even out temperatures and extend the growing season. This article has additional information on growing tomatoes in our area, Growing Your Own Tomatoes and Tomatillos https://catalog.extension.oregonstate.edu/sites/catalog/files/project/pdf/ec1333.pdf, and growing tomatoes in a hoop house, Grow Tomatoes in a Hoop House https://www.suburbanhobbyfarmer.com/grow-tomatoes-in-a-hoop-house/.

Growing cauliflower successfully is a bit of a challenge. Cauliflower like space (18-24 inches apart) and even conditions, even temperatures, nice even moisture levels, even nutrient levels. If conditions are not to their liking, no cauliflower heads. It's actually easier to grow them in the fall when conditions gradually cool. Spring weather is pretty iffy with lots of ups and downs. Sow the seed outside about August 1. Direct seeded plants develop huskier root systems, less prone to root maggots. Work 1/2 cup organic fertilizer into the soil. You want the plants to be about 12 inches high by November, so if growth slows down side dress with more fertilizer. When spring comes and the plants start growing again side dress each plant with a Tbsp blood meal over the feeder roots, and a small amount of complete fertilizer around the plants. You want to stimulate the most rapid growth possible. You should get cauliflower curds by April-May. (Growing Vegetables West of the Cascades by Steve Solomon). You can try transplanting your seedlings now, but cauliflower plants tend to be pretty finicky. Cauliflower plants are very susceptible to root maggots, so you might want to examine the roots on your plants for them, tiny (1/4 inch maggots). Adults resemble small house flies (1/4 inch long). This article has pictures and information on root maggots, Cabbage and Onion Root Maggots https://extension.umn.edu/yard-and-garden-insects/root-maggots