Blossom End Rot is due the tomato plant not being able to access calcium and nutrients. It is more about consistent watering than actual calcium in the soil. You should address both. Eggshells need to be dissolved to create water soluble calcium. Here is the treatment for tomato BER.

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26 Comments

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  2. The calcium carbonate present in the eggshells should neutralize the acidity in the vinegar.

  3. I have the same grinder , I’ve found after loading hold grinder at about 45 degrees egg shells move top to bottom and turn to powder vary quick. 🙏🏻

  4. I love how you had to use a sharpie to show blossom end rot. Don’t have a problem with blossom end rot, but I had something like a fungus, turned the leaves and stems brown, still alive, but with a brown layer on the leaves and stems. Killed some, some have healthy tips, and some aren’t very affected. I’ve sprayed some 3 in 1 on them and some look better but with the rain I’ll have to spray again.

  5. All the recent science suggests that there's no actual link between BER and Calcium. Recent studies have found that its just as likely that BER is causing the calcium deficiency rather than a result from calcium deficiency. Adding extra calcium will not stop BER and BER can easily still happen with regular watering on otherwise healthy plants. BER is only treated in professional environments through foliar sprays that are applied regularly over months. Studies have shown it is just as likely that time is simply fixing the BER over that period rather than extra calcium. BER is not fully understood by modern science and anybody that says its "a lack of calcium" or "its a watering issue" should read further on modern BER research.

  6. a thing i have learned about blossom rot is, what happens above the soil is a result of what's happening beneath the soil. i added a fungus inhibitor to the dirt and the blossom rot went away. treating the roots with anti fungals will get rid of the rot.

  7. A woman here on YT said she buys powdered milk, adds a little to your planting soil then waters the plant. When I told my neighbor about it she never had any more BER. It's been several years now but she was sure grateful that I told her that.

  8. I will keep that drying shed in my garden goals folder! I hope to someday that I’m producing so much that I need a structure like that! I planted up my romas last week.. prepped the soil with granulated tomato fertilizer, worm castings and bone meal. I recently watched a video about using the water from boiled eggs being used to water tomatoes for calcium.. I imagine there’s no harm, but do you know if there’s a calcium benefit? I cried my way thru 2 semesters of chemistry.. 😂

  9. My neighbor said Romas typically have blossom end rot with the first tomatoes. Is that true? I am growing them first time along with my usual San Marzanos. I wasn't sure if it's just her watering habits, or should I really expect it upfront?

    I pulverize my eggshells into powder and throw some in the beds during prep. Even if they are not readily able to provide calcium, worms love them as grit, from what I have read.

  10. How long will the egg powder last? And, do you clean out the egg smell first before putting it into powder form?

  11. Is there a difference between getting blossom end rot when the tomatoes are green vs. red? I got a lot of them on green tomatoes this year.

  12. This is my 3rd year attempting to grow San Marzano tomatoes. The first 2 attempts were all disappointing with tons of blossom end rot. I am very diligent about watering as I mostly use containers in my small urban space, but still haven’t gotten it right. This year I threw some gypsum in one area and bone meal in another just to see what happens with the extra calcium. I don’t have tomatoes yet, so we’ll see if it makes a difference. All of my other tomato varieties have grown without issue.

  13. A friend of mine used her blender to crush the eggshells and it RUINED her blender. Lucky for me, I've been putting hand-crushed eggshells in my garden for years, so I am reaping the benefit of that ealier effort.

  14. I consider myself a total novice container gardener, so I had no idea that blossom end rot was even a thing. Huh, I guess I’m really lucky that I’ve bumbled along and haven’t had anything worse than planthoppers and the very rare tomato hornworm. I solved the latter problem by encouraging the birds to visit my deck with a birdbath and treats. They took care of every worm before they could eat much of anything. But I’ll be saving up my eggshells from now on. Thanks so much for the information; it is incredibly helpful.

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