Bedding plants

Tuberose - plant, care, cut & hibernate


Tuberose is an attractive flower for the garden and a charming ornament for the vase at home. Find out how to care for this perennial here.

© Florin Capilnean -

Elegance, upright inflorescences and sustainable bloom, that makes garden flowers favorites for vase decoration. Tuberose (Agave polianthes) has such an outstanding property. The astonishing number of inflorescences that come from just one plant is impressive. Rather, the wonderful fragrance that the flowers exude and that increases strongly in the evening captivates.

Here we present the magnificent flowering perennial and provide you with important care instructions.

Briefly portrayed Agave polianthes

The tuberose develops flower stems up to 1 meter high, on which a multitude of white and, depending on the cultivation, pink to reddish, intensely fragrant flowers develop. Planted with a time delay, the tuberose bloom from July to October.

The plant develops from an onion and is not hardy.

A sunny, sheltered location is ideal

The Agave polianthes finds the best conditions in a sunny location. However, this should be protected from the wind so that the long flower stems are not knocked over by light gusts.

A permeable and nutrient-rich soil is preferred
Put your plants in nutrient-rich and water-permeable soil. Loosen loamy soil with plenty of sand and mature compost.

Plant tuberose onions
You can prefer tuberose plants indoors from March to June. To do this, put the onions in flower pots with potting soil. Then the pots are placed in a bright, not too warm place. First keep the substrate for growing only slightly moist. If the first leaves show up, water the tuberose plantlets a little more.

You can plant the preferred plants in the garden from May. If you want your flowers to decorate the bed as a group, then plant the fragrant ornamental perennial at a distance of 30 centimeters.

You can also plant the bulbs directly in the garden. Wait until the risk of frost is largely eliminated. In rather mild weather conditions, the onions can reach the soil from the end of March, in rough areas from the middle of April.

It makes sense to plant several bulbs at intervals of 2 weeks, so you can cut the flowers for the vase for a long time.

Watering during longer dry periods
Tuberose is particularly easy to care for, and this also applies to watering. Weather-related rain is sufficient. However, you should water the bulbous crop in the morning during long dry spells.

Fertilize with the irrigation water
Agave polianthes is fertilized as soon as the first flower buds appear. Use liquid flower fertilizer, e.g. this one, which you give your plants with the irrigation water. It is essential to observe the dosing instructions.

Only the vase is cut
The magical flowering perennial is ideal as a cut flower. Cut the tuberose for the vase in the morning and use a flower stem on which one flower has opened and the second is just unfolding.

Place the fresh flower cut in a tall vase with lukewarm water. If you like, you can combine the Agave polianthes with other cut flowers.

Hibernate tuberose
The bulbs of the plant are sensitive to frost. The tuberose does not overwinter in the garden. Before the first frost, remove the plants from the ground. Then let the onions dry in an airy place. The plant bulbs are stored dark and dry at low temperatures. Turn the onions regularly in winter. A frost-free garage or a dry cellar are ideal as winter quarters.

In summary: The tuberose is characterized by its fragrant bloom. A sunny and sheltered location is ideal for the flower. The soil should be permeable and rich in nutrients. Otherwise the tuberose is frugal in the care. Before the first frost, however, the bulbs should be taken out of the ground and overwintered in a dark, dry and cool place.