![supercal petchoa petunia x calibrachoa in hanging basket supercal petchoa petunia x calibrachoa in hanging basket](https://bedsandborders.com/wp-content/uploads/2016/09/petchoa-superCal-terracotta.jpg)
Applying fertilizer monthly or weekly, depending on the variety, will help the plant grow quickly. Hanging baskets and other containers need more frequent watering.
![supercal petchoa petunia x calibrachoa in hanging basket supercal petchoa petunia x calibrachoa in hanging basket](https://flaurancompanygreenhouse.com/wp-content/uploads/2021/04/Cali-Bloomtastic-Yellow.jpg)
Watering once a week should be sufficient in most regions. They need at least five hours of sunlight every day and flourish in moist soil and conditions of low atmospheric humidity. Petunias can tolerate relatively harsh conditions and hot climates, but not frost. The tubular flowers are favoured by some Lepidoptera species, including the Hummingbird hawk moth. Most petunias are diploid with 14 chromosomes and are interfertile with other petunia species, as well as with Calibrachoa. exserta, which is a rare, red-flowered, hummingbird-pollinated species.
![supercal petchoa petunia x calibrachoa in hanging basket supercal petchoa petunia x calibrachoa in hanging basket](https://flaurancompanygreenhouse.com/wp-content/uploads/2021/04/Cali-Bloomtastic-Yellow-1536x1229.jpg)
Petunias are generally insect pollinated, with the exception of P.