Asked by: Mildrey Ymaz
asked in category: General Last Updated: 22nd February, 2020

How much water do potted petunias need?

Once established, reduce watering to once every seven to 10 days. Provide 1 to 2 inches of water at each irrigation, which is enough water to moisten the top 6 to 8 inches of soil. Petunias can tolerate mild drying but the soil shouldn't be allowed to dry out completely.

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Thereof, how often should petunias in pots be watered?


  1. Petunias are tolerant of heat so you don't have to water them regularly. A thorough watering once a week should be sufficient (unless there are prolonged periods of drought in your area).
  2. Fertilize your plants monthly to ensure good growth.
  3. Remove faded/dead flowers to prolong blooming.

Furthermore, how long do petunias last in pots? How long do the plants themselves actually live for, or perhaps you want to know how long the flowers last once your petunias bloom? To tackle the first part of the question, petunias can live for 2 or 3 years but generally behave as annuals because they can't survive the freezing temperatures of the winter.

Likewise, can petunias be overwatered?

Petunias are subject to root and crown rot, a result of uneven watering. “Like pansies,” she says, “petunias must never be allowed to wilt, either from under- or overwatering. When watering, do it thoroughly and then allow petunias to dry out--almost to the wilting stage.

Why are my potted petunias dying?

Unfortunately, having water-logged soil can also lead to wilting. The result is again wilting petunias because there isn't enough water in the plant tissues. There is one more soil issue you should check on for indoor petunias. When plants outgrow their pots, the roots are going to be very crowded under the surface.

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