If you’re looking for a plant that offers both beauty and a practical benefit, you might ask: does citronella flower? The answer is a resounding yes, and these blooms are more charming than you might expect. Often grown for its mosquito-repelling foliage, the citronella plant surprises many gardeners with its lovely, colorful flower spikes. This article will guide you through everything about citronella flowers, from their appearance to how to get yours to bloom beautifully.
Citronella is a common name for a few different plants. The one most associated with mosquito repellent is the citronella grass, Cymbopogon nardus. This is the source of the citronella oil used in candles. However, the plant commonly sold in pots as “citronella” or “mosquito plant” is actually a scented geranium, Pelargonium citrosum. It’s this pelargonium that produces the attractive flowers we’re discussing today.
Does Citronella Flower
Understanding the difference between citronella grass and the mosquito plant is key. Citronella grass is a true grass and does flower, but its blooms are insignificant grassy plumes. The star of the show for garden color is the Pelargonium citrosum. When people wonder “does citronella flower,” they are usually refering to this popular patio plant. And it certainly does!
What Do Citronella Flowers Look Like?
The flowers of the mosquito plant are delicate and clustered. They form loose, airy umbels on slender stems that rise above the lobed, fragrant foliage. Each individual flower is small, with five petals. The color can vary, which is a fun suprise for many growers.
- Common Colors: The most frequent color is a soft lavender or pale pink.
- Other Variations: You might also find blooms in shades of white or a deeper magenta.
- Foliage Contrast: The flowers create a lovely contrast against the bright green, textured leaves.
When and How Often Does Citronella Bloom?
With the right care, your citronella plant can be a reliable bloomer. It’s not a constant flower factory, but it puts on a good show during its growing season.
- Primary Season: The main blooming period is late spring through early fall.
- Bloom Cycles: It tends to flower in flushes. You’ll get a burst of blooms, then a short rest period before the next round.
- Climate Dependence: In warmer, frost-free climates, it may bloom sporadically almost year-round.
How to Encourage More Citronella Flowers
If your plant is healthy but not flowering much, a few tweaks can make a big difference. The goal is to mimic its ideal growing conditions.
1. Provide Plenty of Sunlight
This is the most critical factor. Citronella plants need lots of light to produce flowers. Aim for at least 6 to 8 hours of direct sunlight daily. A south or west-facing location is perfect. In very hot climates, a little afternoon shade can prevent leaf scorch, but don’t shade it to much.
2. Water Correctly
These plants prefer a “soak and dry” method. Overwatering is a common mistake that leads to root rot and no flowers.
- Water deeply when the top inch or two of soil feels dry.
- Ensure the pot has excellent drainage holes.
- Reduce watering frequency in the winter when growth slows.
3. Feed with the Right Fertilizer
Using a high-nitrogen fertilizer will promote leafy growth at the expense of flowers. You want a balanced or bloom-boosting formula.
- During the growing season (spring-fall), feed every 4-6 weeks.
- Use a water-soluble fertilizer labeled for flowering plants or a balanced 10-10-10 formula.
- Stop fertilizing in late fall and winter.
4. Practice Regular Pruning and Deadheading
Pruning encourages bushier growth, which leads to more flowering stems. Pinch back the tips of leggy stems throughout the growing season. Also, remember to deadhead. This means removing spent flower clusters. It tells the plant to put energy into new blooms instead of making seeds.
5. Ensure Proper Winter Care
In colder zones, you’ll need to bring your citronella indoors before the first frost. A stressed plant won’t flower well the next year.
- Place it in a sunny window indoors.
- Water sparingly, just enough to keep the leaves from wilting.
- You can move it back outside after all danger of frost has passed in spring.
The Scent and Function of Flowers vs. Leaves
It’s important to note that the flowers themselves have a very light, floral scent. The strong citronella aroma comes from the leaves, especially when they are brushed or crushed. While the plant is often marketed for mosquito repellency, its effectiveness is debated. The concentration of oil in the leaves is lower than in commercial repellents. Still, many gardeners find that having the plant nearby offers some mild deterrence. The real prize, however, are those cheerful blooms that add color to your patio or garden border.
Common Problems That Prevent Flowering
Sometimes, despite your best efforts, the flowers don’t appear. Here are the usual suspects.
Not Enough Light
This is the number one reason. A citronella plant in deep shade will survive but will become leggy and produce few, if any, flowers. If your plant isn’t blooming, try gradually moving it to a sunnier spot.
Over-Fertilizing or Wrong Fertilizer
Too much fertilizer, especially nitrogen, makes for a lush green bush with no flowers. Stick to a modest feeding schedule with a bloom-friendly formula. Sometimes, less is more.
Pot-Bound Roots
While citronella can tolerate being somewhat root-bound, being severely cramped can stress it and reduce flowering. If you haven’t repotted in years, consider sizing up in the spring. Use a well-draining potting mix.
Pests and Diseases
A sick plant won’t bloom. Keep an eye out for common issues.
- Aphids and Whiteflies: These sap-sucking insects can weaken the plant. Blast them off with water or use insecticidal soap.
- Fungal Issues: Overwatering can lead to root rot or botrytis (gray mold). Ensure good air circulation and avoid wetting the foliage when you water.
Propagating Your Citronella for More Flowers
The easiest way to get more flowering plants is through stem cuttings. It’s simple and has a high success rate.
- In spring or early summer, cut a 4-6 inch healthy stem tip just below a leaf node.
- Remove the leaves from the bottom half of the cutting.
- Dip the cut end in rooting hormone powder (this step is optional but helpful).
- Plant the cutting in a small pot filled with moist, sterile potting mix or perlite.
- Place the pot in a bright, warm spot out of direct sun and keep the soil lightly moist.
- Roots should develop in a few weeks. Once you see new growth, you can treat it like a mature plant.
Design Ideas Using Flowering Citronella
Don’t just hide your citronella in a corner! Use its flowers and foliage as part of your garden design.
- Container Gardens: It’s a fantastic “thriller” plant in the center of a large pot, surrounded by trailing annuals like lobelia or sweet potato vine.
- Patio Borders: Line them up along a sunny walkway or patio edge. The light flowers and scent are lovely when brushed past.
- Herb Garden Accent: Plant it among your rosemary, lavender, and thyme. The foliage and flower colors complement other herbs beautifully.
Frequently Asked Questions (FAQ)
Do citronella plants have flowers?
Yes, the common mosquito plant (Pelargonium citrosum) produces clusters of small, lavender-pink flowers.
Are citronella blooms colorful?
They can be! While often lavender, the flowers can range from white to pink to magenta, adding a nice splash of color.
What is the flowering season for citronella?
The main flowering season is from late spring through early fall, with cycles of blooms throughout.
Why is my citronella plant not flowering?
The most likely cause is insufficient sunlight. Other reasons include over-fertilizing with nitrogen, overwatering, or needing a new pot.
Should I cut the flowers off my citronella plant?
Deadheading (removing old flowers) encourages more blooms. But you can certainly leave a few to enjoy their delicate apperance.
So, does citronella flower? Absolutely. Beyond its famous scent, the citronella plant rewards you with airy, colorful blooms that last for months. By giving it plenty of sun, careful watering, and occasional feeding, you can enjoy both its fragrant foliage and its pretty floral display. It’s a versatile and rewarding plant that deserves a spot in your sunny garden or on your patio.