Dipladenia (also known as Mandevilla) is one of those low-maintenance plants that really rewards you with a massive explosion of blooms all summer long. But here’s the secret: to get that gorgeous display, you have to nail the location. It’s all about giving her exactly what she needs to thrive.
Summer
Mandevillas are absolute sun-worshippers. They love light and heat, which is why they should spend their summer vacation out on the balcony or patio. This goes for all of them, even those cute little Dipladenia bonsais.
Outdoor Season
While these plants can handle the heat like a pro, they are total divas when it comes to the cold. You can move them outside:
- Once temperatures are consistently staying in the double digits (Celsius).
- When there’s no more risk of a night frost.
- Usually around mid-May (after the “Ice Saints” have passed).
The outdoor season wraps up:
- In the fall, according to the calendar.
- When temps start dipping below 50°F (10°C).
- Definitely by the time it hits 46°F (8°C) outside.
The Perfect Spot
During the blooming season, your Dipladenia will be happiest in a spot that is:
- Bright (sunny to full sun).
- Protected from the wind.
- Sheltered from heavy rain.
She can handle partial shade, but keep in mind that less sun usually means fewer flowers. On the flip side, that intense midday sun can sometimes be a bit much if the heat gets trapped and stagnant. If you’re growing a climbing Mandevilla, here’s a pro tip:
- Keep the vines in full sun.
- Keep the root area in partial shade.
Winter
Once the outdoor season ends, it’s time to bring your plant inside for winter storage. To keep her happy until spring, look for a spot that is:
- Bright to very bright (morning or evening sun is great).
- Kept at a steady temperature between 46°F and 54°F (8-12°C).
If it’s too warm in the winter, she might not bloom as well next year. If it’s too dark or too cold, your Dipladenia will start dropping leaves and could even die from the chill. Watch out for cold drafts, too—she hates those!
Growing as a Houseplant
Can you keep a Dipladenia as a houseplant year-round? Absolutely! You just need to provide enough light and warmth. An east- or west-facing window is perfect for that gentle morning or evening sun. A south-facing window works too, as long as you give her a little break from the scorching midday sun.
One more thing: Mandevillas hate getting “cold feet.” To keep the roots cozy, try placing your plant on:
- A windowsill.
- A small side table.
- A plant pedestal.
- A rolling plant stand.
