PAGE 11 
Continuous Flonering of Chrysanthemums 
Since the advent of daylength and temperature control we have seen chrysanthemum cut flowers on the markets every 
month since 1946, thanks to our never-tiring research workers in various federal and state institutions. Season has been 
eliminated and the flowering time can be accurately controlled, 
Daylength Control 
When Chrysanthemums are grown around the year it is very necessary that we know when to apply shade or light to 
make the plants respond as we desire. The following schedule will give you the proper dates for lighting and shading 
for each response group. 
YEAR AROUND LIGHTING AND SHADING SCHEDULE 
Shading to Lighting to Start Shading to Start Lighting to 
Response Group Stop in Fall in Fall in Spring Stop in Spring 
7 week Sept. July 21 Apr. May 
8 week Sept. July 28 Apr. May 
9 week Sept. Aug. 4 Mar. May 
10 week Sept. Aug. 11 Mar. May 
11 week Sept. Aug. 18 Mar. Apr. 
12 week Oct. Aug. 25 Mar. Apr. 
13 week Oct. Sept. 1 Mar, Apr. 
14 week Oct. Sept. 8 Feb. Apr. 
Lighting 
The light intensity must be 10 foot candles to prevent bud initiation. For single benches install 100 watt lamps with reflec- 
tors spaced at six foot intervals, three feet above the plants. When lighting an entire house the lamps should be in- 
stalled in the ridge of the house, the number depending on the width of the house. The lights should be turned on at 
any time during the night. 
The additional lighting schedule shows how many hours each evening one must have additional light to prevent bud 
initiation, 
ADDITIONAL LIGHTING SCHEDULE 
3 Hours during the months of August, September, October, March, April and May, 
4 Hours during the months of November and February. 
5 Hours during the months of December and January. 
Shading 
Use a good durable Black Cloth which when applied will reduce the light intensity to 2 foot candles or less. More light 
intensity than this will result in delayed flowering and unevenness of bloom. 
The cloth should be removed at 5 P.M. and removed at 8 A.M. Continue covering each evening on pompons until the 
latest buds show color and most of the flowers are well. developed. For large flowering varieties shading can be dis- 
continued after all flowering buds have attained the diameter of approximately one-half inch. 
Be sure that covering is complete on all benches shaded, as any leaks in light will cause uneven spots in the bench at 
blooming time. 
Black cloth should be applied each evening although missing one night a week will give fair results but delayed flower- 
ing results when cloth is not applied each evening. 
Covering Entire House with Black Sateen 
