Mandevilla seeds

Turn Any Trellis into a Tropical Show piece with Vibrant Mandevilla Seeds

Some plants make a garden look nice. Mandevilla makes a garden look like a vacation. Those big, bold, trumpet-shaped blooms in hot pinks, deep reds, and crisp whites cascading down a trellis or spilling over a hanging basket — it's the kind of thing that makes people stop mid-conversation and say "wait, what IS that?" And that's exactly the vibe we're going for. If you've been searching for mandevilla seeds for planting, SeedOrganica has fresh, viable stock that's quality tested and ready to ship to home gardeners across the US. You don't need a tropical estate to grow these beauties. A sunny patio, a balcony railing, a mailbox post, a pergola — mandevilla will climb just about anything and turn it into something gorgeous. Store-bought potted mandevillas from the big box stores are fine and all, but growing your own from seed? There's just something different about watching those first twisting tendrils reach for the sky knowing you started the whole thing.

Explore Our Mandevilla Seeds Varieties

Mandevilla might look like it belongs on a resort balcony in the Caribbean, but the variety within this plant family is pretty impressive — and each type brings a slightly different personality to your garden. We've curated a collection that gives you options whether you're growing vertically on a big structure or keeping things compact in a container.

Our Pink Mandevilla (Mandevilla sanderi) is the classic. This is the one that put mandevilla on the map for home gardeners. Big, open, trumpet-shaped flowers in that signature hot pink — sometimes with a deeper rose-colored throat — set against glossy, deep green leaves. It's almost aggressively pretty, if that makes sense. The contrast between those vivid pink blooms and that dark foliage is just chef's kiss. It's a vigorous twining climber that'll happily scale a trellis, arbor, or fence, reaching 10 to 15 feet in ideal conditions. Blooms continuously from late spring through fall, which means you're getting months of color from a single plant. This is the variety that turns a boring chain-link fence into the most photographed thing on the block.

For a completely different mood, our White Mandevilla (Mandevilla boliviensis) brings elegance and calm. Pure white funnel-shaped flowers with a subtle yellow throat — it's clean, fresh, and sophisticated. If pink mandevilla is the life of the party, white mandevilla is the one having a quiet, interesting conversation in the corner that everyone eventually drifts toward. It looks absolutely stunning against dark-stained wood trellises or brick walls. It's also gorgeous mixed with the pink variety — the two planted side by side create a contrast that looks incredibly intentional and designed, even if you just stuck them both in the ground and hoped for the best. White mandevilla tends to be a little more delicate than the pink, but it still puts on a reliable show all season.

Then there's Chilean Jasmine (Mandevilla laxa) — and this one's the sleeper hit of the collection. It's technically a mandevilla, but it behaves differently than its tropical cousins. First off, it's significantly more cold-hardy. Like, it can survive in zones as low as 7 with some protection, which is wild for a plant that looks this tropical. The flowers are white, star-shaped, and intensely fragrant — a sweet, jasmine-like perfume that carries on the evening air and is honestly one of the best scents in the entire plant kingdom. It's deciduous in cooler climates, dying back in winter and resprouting in spring, which makes it the go-to mandevilla for gardeners who don't live in Florida or Southern California. If you want that lush tropical climber look but you're dealing with actual winters, Chilean jasmine is your best friend.

Our Red Mandevilla is the bold choice. Deep crimson-red flowers that practically glow against the foliage. It's dramatic, it's intense, and it absolutely commands attention. The red varieties tend to be slightly more compact growers, which makes them excellent for containers, hanging baskets, and smaller structures where you want maximum visual punch without the vine taking over entirely. Pair it with white mandevilla on the same trellis and you've got a red-and-white display that looks straight out of a garden magazine cover. It blooms just as prolifically as the pink and handles heat like a champ.

And for gardeners who want the mandevilla look in a more compact, bush-like form, we carry Dipladenia — which is closely related to mandevilla and was actually classified under the same genus for years. Dipladenia stays shorter and bushier rather than climbing, typically maxing out around 2 to 3 feet. Same gorgeous trumpet flowers, same glossy leaves, just in a mounding habit instead of a vining one. It's perfect for hanging baskets, window boxes, and tabletop containers where you don't want or need a climber. Think of it as mandevilla's little sibling — same good looks, just a more compact package.

The variety here is really the point. You've got climbers for big structures, compact growers for containers, cold-hardy options for northern gardeners, and a whole palette of colors to work with. There's a mandevilla for pretty much every situation, and growing more than one variety is definitely the move if you want your outdoor space to feel like a tropical getaway.

Gardening Insights for Growing Mandevilla

Let's talk expectations first, because growing mandevilla from seed is a little different than picking up a blooming plant from the nursery. Seeds take longer to reach flowering size — we're talking several months to a year or more before you see those first trumpets open up. But that's part of the fun. You're building something from scratch, watching this vine develop its character, and when those first blooms finally pop? That hit of satisfaction is unmatched. Growing from seed also gives you access to varieties and species that are nearly impossible to find as potted plants at your local garden center. So yeah, it's a patience game, but it's absolutely worth playing.

Sunlight is non-negotiable. Mandevilla needs lots of it. Full sun — at least 6 to 8 hours of direct light — is ideal for maximum flowering. It can tolerate a few hours of afternoon shade, especially in really hot climates where the summer sun is brutal (looking at you, Arizona and Texas), but too much shade and you'll get plenty of green foliage and very few flowers. That's the tradeoff. If you're growing on a patio or balcony, face the plant south or west for the best light exposure. Indoor growers, park it right at the brightest window you've got and consider supplemental lighting during winter months.

Soil needs to be rich, humusy, and well-draining. This is the combination that mandevilla really thrives in. A good quality potting mix with some perlite or coarse sand mixed in works great for containers. In the ground, work in plenty of compost before planting. Mandevilla likes soil that holds some moisture but never stays soggy — the root zone should feel like a wrung-out sponge, not a puddle. Soggy roots lead to root rot faster than you'd think, and a rotted mandevilla is a dead mandevilla. Slightly acidic to neutral pH, somewhere around 6.0 to 6.8, is the sweet spot. Don't stress about hitting an exact number though — just make sure the drainage is there and the soil has some organic richness to it.

Watering should be regular but not excessive. During the active growing season (spring through fall), water when the top inch of soil feels dry. In the heat of summer, that might mean every couple of days for container plants. In-ground plants need less frequent watering since the soil retains moisture better. Cut way back in winter, especially if the plant is dormant or semi-dormant indoors. Overwatering during the cool season is probably the number one killer of mandevillas in home gardens. When in doubt, wait another day before watering. This plant handles brief dry spells way better than it handles wet feet.

Temperature and hardiness — here's where you need to be real with yourself about your climate. Most mandevilla species are tropical and won't survive frost. They're happiest outdoors year-round in zones 10 and 11. In zones 8 and 9, they might survive mild winters with heavy mulch and some luck, but it's risky. Chilean jasmine is the outlier — it handles zones 7 through 10 and is significantly more cold-tolerant. For everyone else (which is most of the US), the play is to grow mandevilla in containers that you can bring indoors before the first frost. Treat it like a houseplant over winter, keep it in a bright spot, water sparingly, and move it back outside once nighttime temps are consistently above 50°F in spring. Lots of gardeners do this every year and it works perfectly well. A little seasonal shuffle is a small price to pay for a plant this gorgeous.

Starting from seed: mandevilla seeds can be a bit slow and uneven with germination, so patience is key here. Plant seeds about a quarter inch deep in a warm, moist seed-starting mix. Keep the soil temperature around 70 to 80°F — a heat mat really helps if you have one. Cover the tray or pot with plastic wrap or a humidity dome to hold in moisture. Germination typically takes 2 to 6 weeks, sometimes longer. Don't give up if nothing happens in the first couple weeks — these seeds like to take their time. Once seedlings emerge, give them bright light and keep the soil consistently moist but not waterlogged. Transplant to larger pots once they've developed a couple sets of true leaves. Provide a small stake or trellis early on so the vine has something to grab as it grows. Those twining stems will reach for support instinctively.

One more thing — mandevilla is a feeder. During the growing season, give it a balanced liquid fertilizer every couple of weeks, or a slow-release granular fertilizer at the start of the season. The continuous blooming takes a lot of energy, and feeding helps keep the flower production going strong. Ease off the fertilizer in fall and don't feed at all during winter dormancy. You want the plant to rest, not push new growth when the light levels are low.

Frequently Asked Questions