Page 32 - Book1

32

A study was underway several years ago to understand the

range of temperatures for growing poinsettias. In the first study, a

comparison was made of how varieties suited to the standard

temperature of 20°C (68°F) grew under 17°C (63°F) temperature

conditions. Generally, both the plant and bracts are smaller at lower

temperatures and therefore these points were very carefully

considered during the selection process. The above varieties grow

consistently well at either low or high temperatures as developed from

this program. This program has indicated that breeding for

temperature efficiency can lead to varieties that can perform well

under a broader temperature range. This gives the grower the choice

to set higher or lower temperatures and therefore choose the timing of

delivery and improve the quality without interfering with the growth

rate of the crop.

Variety Plant Habitat

Recommended Pot Size

Max Pot Size

Response Time

V-Habit Ciaten URC Item #

Alreddy Fancy

very

compact

6 - 10.5cm 13cm 8 weeks good less 53085

Alreddy Red medium 10.5 +cm 13cm 6.5-7 weeks good many 53053

Charon Red medium 12 +cm 19cm 7.5-8 weeks good many 53001

Estrella Red medium 12 +cm 19cm 8 weeks good many 53068

Estrella White medium 12 +cm 19cm 8 weeks good many 53002

Estrella Pink medium 12 +cm 19cm 8 weeks good many 53095

Hollystar Red compact 6 - 12+cm 13cm 8 weeks perfect many 53004

Pandora Red compact 6-12+cm 13cm 7.5 weeks good less 53005

Saturnus Marble medium 6-12+cm 17cm 8 weeks perfect many 53006

Saturnus Pink medium 6-12+cm 17cm 8 weeks perfect many 53007

Saturnus Red medium 6-12+cm 17cm 8 weeks perfect many 53097

Saturnus Twist medium 6-12+cm 17cm 7.5 weeks perfect many 53008

Saturnus White medium 6-12+cm 17cm 7.5 weeks perfect many 53009

Stargazer Marble large 12 +cm 19cm 7.5-8 weeks good/perfect many 53087

Stargazer Pink large 12 +cm 19cm 7.5-8 weeks good/perfect many 53010

Stargazer Red large 12 +cm 19cm 7-7.5 weeks good/perfect many 53051

Stargazer White large 12 +cm 19cm 7.5-8 weeks good/perfect many 53089

1-800-443-2290

Holtkamp Greenhouses, Inc. PO Box 78565 Nashville, TN 37216 http://catalog.optimara.com