How to Grow Mandevillas

Would you like to brighten up your home during the spring and summer months? Look no further than the mandevilla. This brightly-colored, viney plant thrives in warm weather, and adds a refreshing touch to your indoor or outdoor living space.^[1] You don’t have to be an expert gardener to grow your own mandevillas; in fact, we’ve answered all your frequently asked questions to help you get started.

[Edit]Steps

[Edit]Are mandevillas easy to grow?

1. Yes, they’re very easy to grow. Mandevilla plants are pretty low-maintenance, and don’t require too much extra work. Also, these flowers only bloom outside when it’s warm, so you don’t have to worry about them during the colder weather.^[2]
   
   • You can grow your mandevilla all year by bringing it inside during the colder months. However, your mandevilla won’t grow as much during the winter.^[3]
   • You can plant mandevillas in a variety of places, like hanging baskets, portable containers, and wire fence panels.^[4]
   • Try growing several mandevillas on a small trellis to create your own living wall.^[5]

[Edit]How do you plant mandevilla seeds?

1. Plant your mandevilla seeds in well-drained soil.^[6] To test your soil, dig a large hole that’s around wide and deep. Pour water into the hole and see how long it takes to drain. If the water drains out in 10 minutes or less, your soil is suitable for mandevillas.^[7]
   
   • If your soil doesn’t drain well, mix something organic into your soil, like decomposed manure, peat moss, or compost.
   • If you’re growing your mandevillas in a pot, fill the container with an even mixture of peat moss, builder’s sand, and potting mix.^[8]
2. Space your seeds about apart.^[9] Then, bury your mandevilla seeds beneath about of soil, so they’re fully covered.^[10]

[Edit]Do mandevillas need a trellis?

1. Yes, they usually do. Mandevillas are vine-like flowers that need some extra support as they grow. If you don’t have a trellis, install a trellis or frame instead.^[11] Mandevillas are “twining” vines, so they’ll circle and attach to the trellis or support automatically.^[12]
   
   • You can also grow your mandevillas in a hanging basket.^[13]
   • If you’re planting mandevillas in a container, stick an obelisk in the soil. Your mandvillas will train to the obelisk as they grow.^[14]

[Edit]Can mandevilla take full sun?

1. Yes, it can.^[15] However, mandevillas also do fine in partial shade.^[16] If you’re growing a mandevilla indoors, give it plenty of bright, indirect sunlight.^[17]
   
   • In general, mandevillas thrive in at least weather during the day, and at night.
   • Mandevillas do well with 6 hours of full sun, but they’ll be fine in partial shade, too. If you grow your plant in a shadier spot, make sure it gets at least 2-6 hours of direct sun throughout the day.^[18]

[Edit]What fertilizer do mandevillas need?

1. Nourish your mandevillas every 2 weeks with phosphorus-rich fertilizer. Spread this fertilizer during the summer months.^[19] Thankfully, mandevillas don’t need fertilizer in the winter, even if you bring them inside.^[20]
   
   • A 10-20-10 fertilizer works well for mandevillas.^[21]
   • Wear gloves whenever you handle mandevillas. The plants create a sap that may irritate your skin.^[22]

[Edit]How often do you water mandevillas?

1. Water your plants frequently so the soil stays moist. To test your soil, slip a wooden chopstick into the dirt. Let the chopstick sit for 10 minutes, and then remove it. If part of the wood changed color during this time, your soil is moist.^[23]
   
   • Your soil should feel damp, but not soaking wet.
   • During the hotter months, spritz your mandevillas with a light mist of water.^[24]
2. Water your plant occasionally during the winter. Mandevillas don’t need to be watered that much during their rest period. Leave the soil mostly dry, but make sure it doesn’t dry out all the way.^[25]

[Edit]Do you prune your mandevilla?

1. Yes, you should prune your mandevilla when you first plant it. Mandevilla plants grow pretty aggressively, and pruning helps keep your plant under control. After planting the seeds, wait for several shoots to emerge from the soil. Choose 3-5 of the strongest shoots to let grow, and prune back the others. Then, continue to trim back any small or overcrowded growths on your plant.^[26]
   
2. Continue pinching away small flowers throughout the growing season. When you remove these small shoots, your vine looks a lot bushier.^[27]

[Edit]When will your mandevilla start flowering?

1. Mandevillas start blooming in late spring. Then, your plant will continue to flower until the first frost hits.^[28] Mandevilla flowers are typically pink, white, or red, and grow along green vines.^[29]
   

[Edit]How do you care for a mandevilla during the winter?

1. Bring your plant inside and prune it back. Mandevilla plants die if they’re left outside during freezing weather.^[30] Once your plant is inside, trim back the vines so they’re only about long.^[31] Don’t worry—your mandevilla will grow back during the warmer months.^[32]
   
   • As an extra precaution, wash the plant carefully to remove any bugs or critters that crawled on the vine during the warmer weather.^[33]
2. Store and tend to your mandevilla in a space. Your mandevilla won’t be flourishing during the colder months, but it won’t be dying, either.^[34] During the winter, lightly water your mandevilla once every 5-6 weeks.^[35]
   • You might keep your mandevilla in the garage, or in another slightly cool space.

[Edit]Warnings

• Mandevillas are toxic to both people and pets. If you have children or pets at home, plant your mandevilla somewhere out of reach.^[36]
• Mandevilla plants tend to attract common pests, like mealybugs, red spider mites, scales, and whiteflies. If you notice any pests on your flowers, spray them down with a strong stream of water. For a more long-term solution, treat your mandevillas with safe insecticidal soaps or insecticides.^[37] According to experts, products like Akari, Avid, Floramite, Pylon, Tetrasan, and Ultiflora are safe to use.^[38]

[Edit]References

1. ↑ https://www.bhg.com/gardening/plant-dictionary/vine/mandevilla/
2. ↑ https://www.bhg.com/gardening/plant-dictionary/vine/mandevilla/
3. ↑ https://hgic.clemson.edu/factsheet/mandevilla/
4. ↑ https://www.gardengatemagazine.com/articles/flowers-plants/plant-guide/how-to-grow-mandevilla/
5. ↑ [v161590_b01]. 22 September 2020.
6. ↑ https://gardeningsolutions.ifas.ufl.edu/plants/ornamentals/mandevilla.html
7. ↑ https://www.bhg.com/gardening/yard/soil/what-is-well-drained-soil/
8. ↑ https://hgic.clemson.edu/factsheet/mandevilla/
9. ↑ https://www.qvc.com/footers/fth/pdf/M53084-Mandevilla.pdf
10. ↑ https://m.youtube.com/watch?v=yhMdeh9unFQ&t=3m0s
11. ↑ https://hgic.clemson.edu/factsheet/mandevilla/
12. ↑ https://edis.ifas.ufl.edu/pdffiles/MG/MG09700.pdf
13. ↑ https://www.gardengatemagazine.com/articles/flowers-plants/plant-guide/how-to-grow-mandevilla/
14. ↑ https://www.gardengatemagazine.com/articles/flowers-plants/plant-guide/how-to-grow-mandevilla/
15. ↑ https://gardeningsolutions.ifas.ufl.edu/plants/ornamentals/mandevilla.html
16. ↑ https://hgic.clemson.edu/factsheet/mandevilla/
17. ↑ https://plants.ces.ncsu.edu/plants/mandevilla-sanderi/
18. ↑ https://plants.ces.ncsu.edu/plants/mandevilla-sanderi/
19. ↑ https://hgic.clemson.edu/factsheet/mandevilla/
20. ↑ https://web.extension.illinois.edu/askextension/thisQuestion.cfm?ThreadID=1336&catID=162&AskSiteID=75
21. ↑ https://hgic.clemson.edu/factsheet/mandevilla/
22. ↑ https://www.bhg.com/gardening/plant-dictionary/vine/mandevilla/
23. ↑ https://edmontonjournal.com/life/homes/gardening/growing-things-monitor-water-soil-to-keep-mandevilla-healthy
24. ↑ https://www.rhs.org.uk/advice/profile?pid=713
25. ↑ https://web.extension.illinois.edu/askextension/thisQuestion.cfm?ThreadID=1336&catID=162&AskSiteID=75
26. ↑ https://www.rhs.org.uk/advice/profile?pid=713
27. ↑ https://gardeningsolutions.ifas.ufl.edu/plants/ornamentals/mandevilla.html
28. ↑ https://www.gardengatemagazine.com/articles/flowers-plants/plant-guide/how-to-grow-mandevilla/
29. ↑ https://www.bhg.com/gardening/plant-dictionary/vine/mandevilla/
30. ↑ https://www.bhg.com/gardening/plant-dictionary/vine/mandevilla/
31. ↑ https://web.extension.illinois.edu/askextension/thisQuestion.cfm?ThreadID=1336&catID=162&AskSiteID=75
32. ↑ https://www.uaex.edu/yard-garden/in-the-garden/reference-desk/tropicals/mandevilla.aspx
33. ↑ https://web.extension.illinois.edu/askextension/thisQuestion.cfm?ThreadID=1336&catID=162&AskSiteID=75
34. ↑ https://web.extension.illinois.edu/askextension/thisQuestion.cfm?ThreadID=1336&catID=162&AskSiteID=75
35. ↑ https://www.gardengatemagazine.com/articles/flowers-plants/plant-guide/how-to-grow-mandevilla/
36. ↑ https://www.bhg.com/gardening/plant-dictionary/vine/mandevilla/
37. ↑ https://hgic.clemson.edu/factsheet/mandevilla/
38. ↑ https://www.canr.msu.edu/news/scout_your_bougainvillea_and_mandevilla_now_for_spider_mites

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