[Newt]

Generally when planting new transplants into the ground, it will take as long as 3 weeks to see new flowers and growth. The roots will need time to establish themselves before they concentrate on flowers and leaves. I think you may be a little impatient.

It's always best to add compost to the existing soil and not potting soil. Compost is organic matter and will improve the texture of your soil, help with water retention and add good microbes and nutrients to your soil to support your plants.

Potting soil isn't soil at all, but peat moss with some perlite and maybe some timed release fertilizer. Peat moss is difficult to rewet once dry (ever let a houseplant dry out and when you water it just sits there?), so you may now need to water more often. I can't say how you should water as your soil is probably sandy and would drain quickly. Add to that the fact you used potting soil, you may find your plants will need more water then usual. There are no nutrients in peat moss so synthetic slow release fertilizer is added. Once that is gone you will need to fertilize on a regular basis. With compost the nutrients will leach out into the soil more slowly.

Hopefully you mulched your plants to help retain mositure. I would suggest you poke your finger into the soil to your second knuckle to see if they need watering. Over time you will be better able to judge how often to water.

When it's time to rip these out, I would suggest you add a 4" layer of compost to the planting bed and mix it into the soil before you plant again. Then mulch your plants after planting.

It sounds to me that you may be at risk of overfertilizing. The potting soil you used has fertilizer and now you've used a bloom booster. I'd say not to fertilize for at least a month.

Newt