Alright, let’s talk about fertilizing them mandevilla flowers, ya know, the ones that look all fancy and stuff. I ain’t no fancy gardener, but I’ve grown a few pretty things in my time, so listen up.
First off, you gotta understand these flowers, they ain’t no weeds, ya can’t just ignore ’em and expect ’em to bloom like crazy. They need food, just like us, but their food is this fertilizer stuff. Now, don’t go gettin’ all confused with them big words. It’s just plant food, that’s all.

What kind of fertilizer to use? Well, there’s all sorts of fancy names and numbers on them bags, but what you really need is a balanced one. That means it’s got a little bit of everything the plant needs. Like nitrogen, that makes it grow all green and leafy. Then there’s them other things, phosphorus and potassium, they help with the flowers and roots. So, look for a bag that says it’s got all three, maybe something like 10-10-10 or 20-20-20. Don’t worry too much about the numbers, just make sure they’re kinda the same.
Now, some folks like to use that slow-release stuff, them little pellets that you sprinkle around the plant. That’s good, ’cause it feeds the plant slowly over time. But I also like to give ’em a little extra boost now and then with some liquid fertilizer. You know, the kind you mix with water and pour on. Just follow the directions on the bottle, don’t go pourin’ too much, ya might burn the roots.
When to fertilize? Well, when they’re growin’, that’s when they need food. So, in the spring and summer, when they’re puttin’ on new leaves and flowers, that’s the time to fertilize. I usually do it every couple of weeks, but you can do it more or less often depending on how your plants look. If they’re lookin’ kinda pale and not growin’ much, they might need more food. If they’re lookin’ all dark green and bushy, they might not need as much. Just gotta use your common sense, ya know?
- Spring and Summer: This is when your mandevilla is growing the most, so it needs regular feeding. Fertilize every 2-4 weeks.
- Fall: As the weather cools down, your mandevilla will start to slow down its growth. You can reduce fertilizing to once a month.
- Winter: If you live in a warm climate where your mandevilla grows year-round, you can continue to fertilize lightly every 6-8 weeks. If you live in a cold climate and your mandevilla goes dormant, you don’t need to fertilize at all during the winter.
And don’t forget about the sun and water. These flowers, they love the sun, so put ’em where they can get plenty of it. And water ’em regular, but don’t drown ’em. The soil should be moist, but not soakin’ wet. If the leaves start turnin’ yellow, you might be overwaterin’, or maybe it’s the fertilizer, who knows? Gardening ain’t no exact science, ya just gotta try things and see what works.
Now, I heard tell of some special fertilizers for flowers. Like there’s this Dr. Earth Flower Girl stuff, folks say it’s real good for blooms. I ain’t tried it myself, but if you want, you can give it a shot. Just remember, read the directions and don’t overdo it.
And one last thing, if you want them mandevillas to be real bushy and have lots of flowers, you gotta pinch ’em back. That means cuttin’ off the tips of the stems, so they’ll branch out and make more flowers. Don’t be scared to do it, it won’t hurt ’em. Just snip off the top couple of inches, right above a leaf node. You’ll see, it’ll make a big difference.
So that’s about it, all I know about fertilizing mandevillas. It ain’t rocket science, just give ’em some food, water, and sunshine, and they’ll reward you with lots of pretty flowers. Now go on and get your hands dirty!

Important things to remember:
- Use a balanced fertilizer.
- Fertilize during the growing season.
- Don’t over-fertilize.
- Give them plenty of sun and water.
- Pinch back the stems for bushier growth.
There ya have it. Happy gardening, y’all!
Tags:[mandevilla, fertilizer, plant care, gardening, flowers, blooms, balanced fertilizer, liquid fertilizer, slow release fertilizer, feeding, spring, summer, sunshine, watering, pinching back]