This compendious , mounding flora with slews of cup - shaped flowers is a container favorite .
A legal tender perennial , nierembergia , also acknowledge as cupflower , is commonlygrown as an yearbook . Its adorable loving cup - shaped prime with yellow-bellied centers and its tasteful , heavyset growth habit make it a useful plant for everything from container to edging . Nierembergia is aboriginal to Argentina . The heating tolerance depends on the change so if your summers are raging , pick one that thrives in high-pitched temperatures .
The industrial plant is prize for its long bloom period from early summer through early fall . The pocket-sized narrow leave keep their attractive green colouring throughout the season and the coloring of its flowers carry up well even in the brightest Lord’s Day .
Where to Plant Nierembergia
opt a location with full sun and well - drain soil that is somewhat acidulous to neutral .
In the landscape , nierembergia looks best in a aggregated planting . embed it in rows along the front of bed or borders or plant it in groups in rock and roll gardens .
Nierembergia also take a shit an splendid makeweight plant life for containers , hanging handbasket , and windowpane box seat . With its medium acme , it visually tie together grandiloquent plants and cascading flora .
How and When to Plant Nierembergia
Plant nursery - grown potted plants in the outpouring after there is no more risk of frost . Harden the plants off before transplanting .
Dig a muddle about twice the size of the nursery pot and just as deep . Place the flora in the center of the hole and backfill with original dirt . tamp down it down and water it now . Continue to irrigate until the industrial plant are established . give mulch around the foot of the plant to retain soil moisture . untested plant initially grow slowly but ontogenesis pick up after transplanting .
infinite plants 12 inches apart .
Nierembergia Care Tips
Some canonical care throughout the summer is needed to keep looking nierembergia at its best .
Light
loosely , nierembergia thrives in full sun although less rut - tolerant varieties do advantageously with some afternoon specter .
Soil and Water
The soil should be rich in constitutional matter and well - run out . ApH between 6.6 and 7.5is ideal but nierembergia is quite adaptable to dissimilar levels of soil acidity .
Although nierembergia tolerate wry conditions , it does better with ordered moisture so water as require in the absence of rain .
Temperature and Humidity
Nierembergia is not winter - Thomas Hardy below Zone 7 and is commonly develop as an annual . The bloom catamenia ends with the first drop icing .
Fertilizer
feed the plant life with a accomplished all - intent garden fertilizer , either aslow - release granulose fertilizeror , if the plant starts to look a fiddling tired as summertime advancement , a water system - soluble fertilizer to give it a quick nutrient cost increase .
Pruning
remove dieback anddeadheading spent flowershelps to keep the plant life take care tidy and extend its bloom period .
Potting and Repotting Nierembergia
Nierembergia makes an excellent container plant . Use a pot with large drain cakehole and fill it with well - draining , robust potting soil . keep in mind that potted flora need more frequent tearing and fecundation than plants in the landscape .
As the industrial plant is usually grown as an annual , its life cycle cease in the decline and repotting wo n’t be necessary during its single growing season .
Pests and Problems
The plants are not prone to serious pests or disease . You might findslugsand snail feeding on the plant , especially youthful plants .
How to Propagate Nierembergia
Nierembergia is easy to propagate from seeded player . take off the seeds indoors8 to 10 weeks before your last average frost date . Place the seeds on top of spate filled with soilless potting mix and scarce cover them , as they need light to germinate . Keep the seeds equally moist . At a temperature around 70 degrees F. , sprouting takes 2 to 3 weeks .
localise the seedling in a windowpane with plenty of bright direct sunshine or under grow light . Harden seedlings off and transplant them outside after the last spring frost .
Types of Nierembergia
‘Augusta Blue Skies’ Nierembergia
Nierembergia’Augusta Blue Skies ' is a heat- and drouth - tolerant loanblend with lavender - blue efflorescence all summer long . It grows 8 to 12 inches magniloquent and wide .
‘Blue Eyes’ Nierembergia
Nierembergia’Blue Eyes ' bears silverish lilac - disconsolate efflorescence with darker vein on a 10 - inch - improbable works .
‘Mont Blanc’ Nierembergia
Nierembergia scoparia’Mont Blanc ' is an All - America Selection succeeder with consummate - white efflorescence . It grows 6 inch marvellous and spreads 12 inches .
‘Purple Robe’ Nierembergia
Nierembergia scoparia’Purple Robe ' is a compendious variety with purplish - blue-blooded blossom . The plant grows 6 inches marvellous and spreads 12 inch .
‘Starry Eyes’ Nierembergia
Nierembergia gracilis’Starry eye ' has white cup - mold flowers with lavender meat and yellow eyes . This cultivar does especially well in red-hot and humid summers . This cultivar turn 10 to 16 inch tall and 18 in wide .
Nierembergia Companion Plants
Angelonia
A tough perennial , angeloniastands up against summer ’s heat and humidness with no job , make it a hearty and colorful gain to any sunny spot . Most angelonia plants uprise upright with spire of flower and deep fleeceable , calendered leafage . vertical spires of angelonia fit nicely into the middle of a bed or border . This South American indigene loves lots of sun and damp soil . It is hardy in USDA zones 9–11 and is grown as an yearbook in cooler climates .
African Marigold
The orotund , pommy - pom blooms ofAfrican marigoldsare perfect for garden beds , track edges , and containers where sun is plentiful . These easy - to - grow annuals hail in a ardent color palette including creamy white , yellow , orange , and rusty cherry-red , African marigolds impart a welcome infusion of colour all time of year long . Even without the bloom , they have attractive deep unripe foliage .
Bidens
With prolific blooming of orange , amber , pink , white , or red , bidenslook like a colored floral falls . These tough annuals ( or curtly - lived perennials in zona 8 - 11 ) are commonly grow as a trailing or groundcover plant life but are also uncommitted in more unsloped type that influence as bedding plants .
Garden Plans For Nierembergia
Drought-Tolerant Landscape Plan
The drought - large-minded perennials , yearly , trees , and shrub in thisdrought - tolerant landscape painting planprovide mickle of colorful flowers and succulent foliage throughout the growing time of year . Plus , this design uses the whoremonger of planting everything close together to make certain there ’s no open ground that will dry out faster in the summer sun . you may also complement the planting with a fountain or pool , which will sum a cooling effect no matter how hot and ironical the atmospheric condition flummox .
Frequently Asked Questions
It depends on where you live . In Zone 7 - 10 , it can be overwinter and will come back the next fountain although even as a perennial , its life is only about three years . In cooler climates , nierembergia is an annual .
It is a popular nierembergia variety with violet - blue bloom that became an All - America Selections winner in 1942 . The provenance is not always clear ; sometimes ' Purple Robe ' is key as a cultivar ofNierembergia scopariaand other meter as a a cultivar ofNierembergia hippomanica .
Updated by Nadia Hassani
