Light up the night with the first glow in the dark petunia! The ‘Firefly’ petunia’s white flowers radiate a soft, mystical green color… magical in the evening garden. These magical petunias are the perfect marriage of nature and science. They have received TIME magazine’s Best Inventions Award in 2024. Why do they glow? An organic bioluminescence is produced by combining the DNA of naturally glowing mushrooms with that of petunia plants. The result is a bioluminescent petunia… a living plant with glowing white flowers. The blooms will continue to be recharged by the sun during the day and glow at night throughout the life cycle of this annual plant.
By adding ‘Firefly’ petunias to an existing landscape, you can create the perfect ‘moon’ garden to enjoy in the evening. Or, use them as an interesting project for children… one that might inspire a new interest in plants or gardening, as well as science.
Q & A:
Do ‘Firefly’ petunias need special care to glow?
No special care is needed. They are identical to traditional petunias, except they glow with bioluminescence like fireflies.
How bright are ‘Firefly’ petunias?
The developers, Light Bio, describe the glow as looking similar to moonlight. The newest flower buds glow the brightest.
When is it easy to enjoy the glow?
The best time to view these bioluminescent petunias is after twilight. The plants harvest energy from the sun during the day and use that energy at night to glow.
Which parts of the ‘Firefly ‘ petunia will glow?
The flowers are the primary source, with the youngest flowers appearing the brightest.
Why did my petunia stop glowing?
If the plant is in poor health, it may stop glowing. Prune any branches with flowers that may have stopped glowing. Ensure that the plant has sufficient sunlight, is not overwatered, and check for any pest or disease issues.
Can I grow ‘Firefly’ petunias indoors?
Yes, but make sure that the plant will receive direct sunlight for 6-8 hours each day. Or you’ll have to use indoor grow lights. Also, the temperatures should be ideally between 65-75 degrees… warm but not hot. Cool but not cold. They won’t tolerate freezing temperatures.
How to water for best results?
Petunias like consistently moist soil, but not waterlogged. Water the plant when the top inch of soil feels dry to the touch, avoiding bone-dry or soggy conditions. This balanced approach helps to prevent plant stress that might impact its bioluminescence.
How much sunlight is best?
For best results outdoors, petunias need 6-8 hours of direct sunlight. Sun exposure during the day allows the plant to ‘charge up,’ storing energy that will later translate into a good supply of bioluminescent glow.
What is the best spot to plant?
Choose a sunny place that’s shielded from strong winds and where the flowers can soak up the daily sun.
Do petunias need fertilizer?
‘Firefly’ petunias are very energy-intensive, meaning they require consistent nutrients to support both blooming and glowing. For best results, fertilize your plants with a classic petunia food (20-6-22) at time of planting, give them plenty of sunlight (6-8 hours of full sun), remove fading flowers immediately, and prune leggy growth. Adequate, consistent moisture is also important.
How to keep plants compact–not leggy.
As petunias grow, they may benefit from pinching… a process that removes the tips of stems to encourage a bushier, compact plant. This technique encourages the plant to maintain a tidy shape and it also increases bloom production.
Credit: Light Bio, Inc.
