Answer: As far as the lawn goes, you probably do not need to water twice a day as long as the weather is cool. You just need to keep the soil slightly damp like a wrung out sponge, not sopping wet and not dried out. The seed can take up to three weeks to germinate or even longer, depending on the type of grass you seeded and on the weather and on the soil temperature. If you already fertilized, do not add more as too much fertilizer can damage the new grass.
Perennials can be grown from seed, although starting with transplants is faster in terms of seeing blooms sooner -- you may have to wait until next year to see flowers.
Some perennial seeds need special treatment before they will germinate, others will grow just fine if planted in the ground in the spring. Check the label directions on the seed packets for instructions. Or, you can ask using the q@a form and we can check it for you. You would need to include the name of the plant, preferably the botanical name.
Have fun with your garden this spring!
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