With their vibrant colors and classic charm, petunias are a total staple for any summer garden. They’re a go-to choice for sunny balcony boxes and porch railings. But here’s the thing: because these beauties crave so much sunlight, they get thirsty fast. To keep them from wilting and ensure they stay covered in blooms, you’ve got to get the watering right. Here is everything you need to know about keeping your petunias happy and hydrated.
Why Petunias Are Such Thirsty Plants
Petunias are sun-worshippers. They need plenty of direct light to produce those gorgeous petals we all love. However, there’s a catch—they absolutely hate “wet feet” (standing water). This is why it’s super important that your balcony boxes or pots have drainage holes.
I also recommend adding a drainage layer of gravel or broken terracotta pieces at the bottom, along with a high-quality, porous potting soil. During those scorching summer months, don’t be surprised if you need to water them twice a day!
When you’re heading out with your watering can, keep these tips in mind:
- Use soft tap water or, even better, collected rainwater whenever possible.
- Avoid watering in the heat of the midday sun. Stick to early morning or evening.
- Always water at the base of the plant near the roots, rather than pouring water over the foliage.
- Skip the overhead spray with the garden hose. Getting the leaves wet can lead to powdery mildew or other nasty plant diseases.
Finding the Perfect Spot for Your Petunias
To get the best results, petunias need warmth and lots of sun. While they can survive in partial shade, you’ll definitely notice fewer flowers. If you want a massive explosion of blooms, here is how to pick the best location and care for them like a pro:
- Pick a sunny spot that offers some protection from heavy wind and rain.
- Keep the water coming! On hot days, a morning and evening soak is best.
- Use loose, well-draining soil.
- Deadhead regularly! Pinching off wilted flowers encourages the plant to keep pumping out new ones.
A little protection goes a long way. If your petunias are stuck out in the open during a rainy summer without a roof or overhang, they can become susceptible to disease.
Lastly, remember that these are summer plants and they can’t handle the cold. If there’s a threat of frost, make sure to bring your pots inside or move them to a frost-free space to keep them safe.
