How To Care For Your Petunias
You don’t want to use too much fertilizer.
Too much fertilizer can cause more stems and fewer flowers, which nobody wants.
In high pH soils (alkaline soils) additional iron or iron sulfate may help lessen chlorosis (yellowing).
Watering Your Petunias
You only need to water them about once per week.
If they stay dry for too long, such as during a drought, water them 2-3 times per week.
Now, while your petunias like water, they don’t like to be too wet.
If the soil around the plants remains excessively wet for several days, they can contract chlorotic growth or disease.
This means they won’t grow as beautifully as they can.
You can help with this by pruning them.
Pruning Your Petunias
You can help your petunias bloom longer and better.
But it will mean snipping parts of the plant.
“Pinching” the plants can be used to increase the number of flowering stems and discourage too many leaves.
This is done by using your fingers to pinch off new stems.
You’ll also want to deadhead your petunias.
Removing old flowers (dead heads) when they start to fade encourages repeat blooming.
You’re helping the whole plant be healthier and look better.
Your plants will all love you if you add mulch around them:
- Lower their soil water evaporation
- Reduce splashing of water onto the lower leaves
- Moderate soil temperatures
- Reduce weed competition
Speaking of weeds, removing them is also good for your garden in general.
How Long Do Petunias Last?
Your petunias should start blooming during springtime and last into fall.
They will be at their best during the summer though (they do love to sunbathe).
In areas with more mild-mannered weather, they can even bloom into winter.
Most of the time, you will be replanting them every spring as they cannot survive most winters.
Protecting Your Petunias
They are normally easy to grow, but they may need your help every so often.
Protecting them from insects such as aphids comes with the job.
Aphids love petunias.
These little bugs crawl all over them and take out the nutrients. Just blast them off with a hose, but not too harshly or you may damage your petunias.
Other insects can appear as well, though they may not be too much of a problem.
Gray mold and soft rot can occur in rainy climates. Well, only if you don’t choose weather-resistant types.
As long as you look after them, petunias will bloom wonderfully.