Cultural Guide

POT Alstroemeria

General

Potalstroemeria is a hardy perennial plant and grows by means of rhizomes which take care of a continuous growth of new shoots. Plants flowers easy and rich. Genetic short plant. Flowers from Spring to late Autumn. Suitable as container plant for patio or terrace/balcony or as garden plant in border. 

 

 

Cropping Programme

Approximate crop timing in glasshouse:

potted December or earlier - flowering April/May - 20 weeks

potted February - flowering late May - 16 weeks

potted March - flowering June - 13 weeks

potted April - flowering June/July - 11 weeks

potted May - flowering July - 11 weeks

potted June - flowering August - 10 weeks

Alstroemerias can be planted earlier than December but then may require cutting back in early February in order to flower in April. This may not be necessary in countries with more light.

It may be possible to flower the plant in winter months by controlling daylength and light intensity. Further trials need to be carried out.

Alstroemeria pot plant can also be grown outdoors from April onwards. Flowering will then take about one month longer than in a glasshouse.

 

Temperature

A temperature of 14 degrees Celcius but the plants can be grown at colder temperatures in the winter if no lighting is given. Ideal would be to build up a vegetative plant at 17 to 20 degrees Celcius for 4 weeks and after which maintain a temperature of 12 - 15 degrees Celcius to activate the plant generatively   

 

Planting

Using a 15-25 cm pot with cocopeat, plant 3-5 cm below top. 

 

Plant density

Make sure plants are not too close to each other and that the leaves do not touch.

 

Compost

A well drained herbaceous medium should be used with a pH 6 - 6.5 and EC 0.5. 
 

Watering and Feeding

Keep soil moist at all times.

The plant requires little Nitrogen but plenty of Potash.

Slow release of granules are best. An EC of 1.5 - 2 mS/cm is recommended/

 

Shading

Shading may be required in Spring and early Summer in order to control the temperature which should be kept below16 degrees Celcius. 

 

Diseases

If a good air circulation is maintained then Botrytis should not be a problem.

 

Pests

Use preventative methods against slugs, catterpillar and aphids.

 

No part of this guide may be reproduced in any form without prior permission.
The recommendations contained  in this guide are fairly general and should be used as such. Specific advice available on request. No liability is accepted by the authors of this guide for any misinterpretation of the recommendations contained therein.