I mixed 50% seed starting mix and 50% organic potting mix. I do this because the seed mix alone seems to dry very quickly. Potting mix seems too heavy on it's own. The seedlings are 3 weeks old, they sprouted after 5-6 days. I am growing purple russian, cherry, sweetie and heatwave. The cherry is a lot smaller than the rest. I have read other growers water with a pinch of fish emulsion every 3 days. I'm using jiffy 3 inch pots, then I usually re pot into jiffy 6 inch pots, then in the ground for real. ThanksStepheninky wrote:What type of soil/ starting mix are they in? And how old exactly are they? How many true leaves do they have?
Usually most standard seed starting / potting soils have plenty of nutrients and no fertilizer is needed or recommended.
To go into that further IMHO you do not want to use fert in till the plants are in there final location. If the plants are young they have what they need to grow and establish their root system.
Normally most will only grow about an inch a week. It also depends on the type of tomato as well, if it is dwarf or determinate the plants will be shorter and more compact in the seedling stage than an indeterminate would be.
Let us know some more details and we will be able to help much better.
I'll put a pic up tommorow. I may be over watering, they are in good sun light, outside on a screened in patio. It's been beautiful here in FL recently, 75-80 degrees and very low humidity for us. Is it wise to bring your seedlings in at night?rainbowgardener wrote:If there was any fertilizer in the potting soil (usually is) and you have been adding fish emulsion every week, they have plenty of nutrients.
If they are really not growing, I'd think about other causes. You said you are watering every AM and they are in peat pots. The peat tends to hold water, they could easily be overwatered, getting waterlogged. That slows growth down because oxygen can't get to the roots.
Otherwise, what kind of light do you have on them? Usually not enough light causes them to grow tall and spindly, but if they were seriously deficient in light, it might slow growth down.
But since you haven't said how tall they are or how many pairs of leaves, I can't tell if maybe you are just impatient. Three weeks isn't a real long time. Picture would help.