Blossom drop results in no crop

At the 4 week mark, my seedlings had started to show signs of growth. The Black Krim already had a sizable tomato in the works and the Lemon Boy was starting to show signs of a few blossoms setting fruit despite its anemic size. Over the course of the weeks that followed, nature gave our area some serious thunderstorms accompanied by a deluge of rain. The sub irrigated pots performed well, allowing excess water to drain out and prevent the pots from causing too much moisture saturation of the soil.

Black Krim -- 7 weeks

Black Krim -- 7 weeks

The simple 12" stake was no longer cutting it, so I took a spare plastic blind adjustment rod and inserted it, providing a significant boost in rigidity for the main stem.

Black Krim -- 7 weeks

So the Black Krim demonstrated about a 20% growth increase in just a couple of weeks. Although a number of blossoms appeared, many fell off prematurely. Temperatures had been getting into the high 80's/low 90's, which I've read is about the borderline on blossom drop. This is where the flower bud is aborted before it blossoms. It just turns brown and then a light touch will easily dislodge it from the stem. In other cases, a bud would end up blossoming but the flower would fail to set and eventually fall off. Given how the Krim was twice the size of the Lemon Boy, I was stumped as to what the plant wasn't happy about. They were both given the same growing conditions. Would this plant end up producing only one fruit for the whole season? The trick is keeping a watchful eye for notable issues (like leaf issues--curling, browning, spotting; very sparse blossom buds; stunted growth or too much foliage) and just add a dose of patience.

Lemon Boy -- 7 weeks

Lemon Boy -- 7 weeks

On the other hand, the Lemon Boy had two tomatoes that continued to swell in size, while a couple more blossoms were fertilized and began to show signs of growing fruit.

Lemon Boy -- Tomato Size Comparison

The largest tomato had already surpassed the size of a ping pong ball. Given the size of the plant, I found it a bit peculiar, especially when looking at many photos of early tomato plants. The Lemon Boy was certainly enjoying the conditions I was providing when compared to the Black Krim.

Lemon Boy -- Early Fruit

Here you can see the relative sizes of the older and newer fruit. It's just a coincidence that they're two pairs.

Lemon Boy -- New Fruit