Mendeltulip Her Grace 
Mendeltulip Krelage’s Triumph 
Mendeltulip Van der Eerden 
Mendeltulip Weber 
Mendeltulip White Sail 
Triumphtulip Telescopium 
5. How to prevent spots on tulips? 
Spotting of tulips often occurs in late spring when the atmosphere 
in the greenhouse is very damp. 
Ventilate freely in order to avoid high temperatures and excessive 
moisture. Water very carefully and never over the tops of the plants. 
Whitewash the glass of your greenhouse to avoid strong sunlight. 
This can also be attained by using cloth over the top of your benches 
for shading. 
The above rules also help prevent ,,flopping”. 
6. How to treat Tulips after they have been cut. 
There are different ways in which cut Tulips can be handled, depen- 
ding on the use of these flowers. If they are to be sh'pped a_ short 
distance, they should have been in water for no Jonger than about three 
hours. 
For shipping cut tulips long distance it would be best nor to put 
them in water at all before shipping, but to advise the customer or 
wholesaler, who receives them, to cut a small piece of the stem, to 
roll them full length, straight in paper and to place them in deep pails 
with cold water in a cool place for about 5 to 6 hours. 
Handled this way, they will arrive very soft and poorlooking, but 
they will come back to perfectly normal flowers, which definitely will 
last longer than the ones, which have been in water before shipping. 
Moreover it will help to prevent ,,spotting” of the flowers during 
transportation. 
If at any time you have too many cut Tulips, it is much better to 
cut them, roll them in paper and lay them in the refrigerator dry, then 
to keep them in water. Five to six hours before you need them you 
can put the benches in pails with fresh water, after you have cut about 
‘/,-inch of the stems, and after this treatment, they will be as good as 
fr shly cut Tulips. 
This way you can keep cut Tulips easily for a week or more. 
7. Growing Tulips under cold glass or in frames. 
Many Darwin and Late Tulips are suitable for this purpose and 
provide excellent cut blooms during the first weeks of spring, when 
planted under cold class or in frames. 
6 
Special rules for Daffodils and Narcissi 
Daffodils and Narcissi must be planted ecar/y, Of the different kinds, 
the Poeticus varieties are the first to be planted, next the small and 
medium-sized and as far as the trumpet Daffodils are concerned, the 
earliest flowering varieties should be planted first. One can take it as 
a rule that no first class results may be expected when the Daffodils 
and Narcissi are planted too late. 
1. When are the bulbs for earliest forcing to be placed in the 
greenhouse? 
For an alphabetic and a descriptive list of all varieties we refer to 
the descriptive list of Tulips and Daffodils in this booklet. This list 
will also give you the dates in which the bulbs should be brought into 
the greenhouse. 
2. Teatment in the greenhouse. 
If at the time of bringing your Daffodils and Narcissi bulbs into the 
greenhouse, you cannot yct see the flowerbuds out of the bulb, it is 
gecessary to place your flats or pots underneath the benches (but not 
nark) at a temperature of max. 50 °F. After the buds are out of the 
dulb, you can place them on top of the bench and for best results 
baise the temperature to max. 60 °F. 
For Daffodils and Narcissi it is advisable to remove the foliage of 
the small shoots which do not show a flowerbud. 
When your Daffodils and Narcissi are starting to bloom, just before 
he buds open, water should be spread lightly over the buds and when 
they are in bloom, less water should be applied. 
3. Precooled Daffodils and Narcissi. 
The treatment of precooled Daffodils and Narcissi in the greenhouse 
is about the same as of those not so treated. It must be emphasized, 
however, that precooled bulbs have to be planted promptly upon 
arrival end have to be plunged in the coolest possible spot, so that 
no advantage of cooling is lost. 
precooled Daffodils and Narcissi respond to about 14 days earlier 
to forcing; one can have Daffodils and Narcissi in bloom already at 
Christmas f precooled bulbs are used. 
Just the same as other Daffodils and Narcissi, precooled stock may 
not be brought into 60 °F until the flowerbud is out of the bulb. 
Another advantage of precooled Daffodils and Narcissi is that in 
contrast to uncooled bulbs, which require four weeks to bloom, the 
precooled ones need as a rule only three weeks to flower. 
Leading varieties suitable for precooling: 
Golden Harvest Yellow trumpet 
King Alfred Yellow trumpet 
Magnificence Yellow trumpet 
