I have had a plastic spray bottle (mechanical, not pressured) of "Tomato
Hold" for probably over 20 years. Of course, I read the label, but it's
not very thorough. Roughly, it says to spray flower clusters when most
of the flowers have opened to prevent blossom drop when nighttime
temperatures are much below 55 F.
I wondering a few things:
1. Firstly, of course, is my bottle still good after 20+ years.
2. Spraying with the bottle seems strange. 99% of the fluid won't get
anywhere near a blossom. So, instead I spray just one burst into the
plastic cap and take a tiny artist's brush and dip into the cap to get
the brush wet. I dab the brush onto the blossoms. Been doing this for
years with evident success, but who knows. One never knows what affect
this is having, but I've been getting pretty early tomatoe set even when
nighttime temperatures drop to 50 and below.
3. Do I want to dab the yellow part of the blossom, or the green back,
or both... or does it matter?
4. Do I want to dab the smaller unopened blossoms at the same time?
5. Will blossoms I don't dab with the solution benefit? Or do I have to
dab them all?
6. Do I have to come back later and dab the unopened blossoms when they
have finally opened?
I've been growing Early Girl exclusively for some years, having enjoyed
pretty good success with them. I used to try various others, but have
settled on Early Girl. It's cooler than many places here (Berkeley, CA
flatlands), there's often days when it's cloudy in the mornings or even
all day some times. Nightime low temperatures now are averaging around
49 degrees (+ or - 5 degrees more or less), and my first blossom sets
are pretty much open now.