blossom rot - Knowledgebase Question

Boise, Id
Question by jnumbers5
June 3, 2010
What's the best way to avoid (or correct) blossom rot on tomato plants? Last year all my plants were fine except one (a Better Boy). It kept getting blossoms and they kept drying up and falling off. I didn't harvest a single tomato from that plant.


Image
Answer from NGA
June 3, 2010

0

Blossom end rot is a physiological condition caused by a lack of calcium at the growing tip of the fruit. While your soil may have adequate calcium, fluctuations in soil moisture content from dry to wet really increase the incidence of blossom end rot. It is especially bad on the early fruit each summer and in sandy soils. The damage occurs as cells die at the tip of the fruit. In time (and as the fruit grows) the spots enlarge and turn black. So, by the time you see it, the damage actually has already occurred some time back. Remedies include: having a soil test to make sure calcium levels are adequate, adding organic matter to a sandy soil to increase its moisture holding capacity, keeping plants evenly moist, especially during the development of the first fruits (mulch helps maintain soil moisture), and spraying plants with a Blossom End Rot spray (contains calcium) which can usually be purchased from your local garden center. Affected tomatoes are still edible. Just cut away the affected portion.

You must be signed in before you can post questions or answers. Click here to join!

« Return to the Garden Knowledgebase Homepage

Member Login:

Username:

Password:

[ Join now ]

Today's site banner is by Baja_Costero and is called "Aloe with six-legged friends"