Marigolds looking yellowish, problem with Marigold

[Cmtz]

About 3 weeks ago I planted some marigolds from seeds. They are now 2 to 5inches tall. The smaller ones are looking yellowish. I water them at least 3 times a week and they get enough sun. What could it be?

[Grey]

They may need more nitrogen. Opa or Scott may know right off.

[opabinia51]

With regard to nutrient defficiencies; yellow leaves is definately a lack of Nitrogen. Though, I would warn against just throwing some salt based fertilizer with a high N value on your flowers. Get some liquid seaweed fertilizer or even better some liquid fish fertilizer.

Any more Ideas Scott?

[The Helpful Gardener]

I'm with Opa...