possible in spring in the east) are reasonably sure to escape the attack of thrips. 
Our Glad bulbs are especially grown for this purpose, matured early and dug in 
August. But if you plant recently dug bulbs you will gain nothing; they will 
continue their rest of three months before starting. 
Thrips are very small insects that suck the juices from the plant. They 
cause the flowers to wither or appear burned, and appear only after weather 
becomes warm. To avoid the damage thrips do, four measures are effective. 
Plant early. Plant clean, treated bulbs. Keep them’ reasonably moist and well 
cultivated, with no weeds. _ 
The total elimination of thrips appears impossible. A few are bound to 
appear as the weather becomes warm. 
We therefore begin to dust with D.D.T. when plants are about 8” tall. Any 
hand duster will do. We use a powder containing 5% D.D.T., 45% Sulphur and 
50% inert ingredients. Dust in early morning when the plants are moist with 
dew. That will cause the powder to stick and remain effective for a week or 
two. Four to six dustings before flowering will control thrips tho in a field 
where various sizes have been planted and where flowering lasts for several 
weeks we consider it advisable to dust again once or more, the next morning 
after flowers are cut. We have not seen flowers or buds damaged by D.D.T. 
This powder can be had most anywhere under one of several trade names. 
Some have reported that D.D.T. is losing its effectiveness. If you do not get 
a good kill of thrips, try Clordane dust, 5% or 10%. This dust will also kill ants, 
cutworms, etc., but don’t get it on vegetables as it is quite poisonous. One 
should be careful about breathing any poison dust or spray. 
Treating Bulbs. We have recommended various dips and treatments for 
bulbs but have rejected all when we later found that some injuries resulted to 
the bulbs. Now we dust our bulbs with the same D.D.T. powder. It keeps aphis 
and mealy bugs away and kills the thrips. 
Naphthalein flakes sprinkled in the bulb containers which are then covered 
and allowed to remain about three weeks, will usually kill all thrips. But too 
long an exposure results in a little damage to the bulbs. 
The Lysol treatment kills thrips and their eggs. It also is useful in con- 
trolling the various bacterial and fungus diseases that attack the bulbs. Mix 
4 teaspoonfuls Lysol to each gallon of water. Soak the bulbs in this not over 5 
hours. Do this just before planting and plant in moist soil. Unfavorable results 
have been reported from soaking too long or by plantmg in a dry soil and thus 
prolonging the action of the Lysol. Some growers do not recommend this 
treatment. 
The bulbs we sell you have been treated with D.D.T. Plant large bulbs 4” or 
5” deep; small 3”; bulblets 2”. Twice their diameter apart. One can plant two 
rows, staggered in a 4” wide furrow or closer in a single row. Rows about 20” 
apart. Alkaline soils produce poor Glads. Soil should be neutral to mildly acid. 
Leaf mould or peat added is useful. Domestic peat is often harmful because 
alkaline. Use no fresh manure, but well rotted manure is good. Top mulch of 
leaf mould or imported peat is good. 
Keep Glads growing with plenty of water and best culture for about two 
months after flowering. It is best to dig bulbs in the south, and necessary in 
the north. 
Sizes and Prices. L means “large,” size 1 and 2, 1144”-11%4” (or more) in di- 
ameter. M. is “medium” and includes No. 3 and 4 sizes, 4%” to 1144” diam. S. 
means “small,” under %” diam. Large and medium bulbs give good long spikes. 
Small bulbs usually bloom in most varieties and when planted early, given good 
culture and plenty of water they usually make fairly long spikes. Early planted 
bulblets often flower. Large blubs bloom earlier and throw more and longer 
spikes. Prices are for one bulb as elsewhere in this catalog. A dozen, all of one 
sort, costs ten times the price of one unless otherwise stated. Six are sold at 
dozen rate. Don’t forget Sales Tax in California. 
Substitution. If you order early there is likely to be no substitution, but 
when out of a variety we send another as nearly like it as possible and of equal 
or greater value. If -you do not approve this, request no substitution. 
We are offering many of the newer and better varieties that have been in- 
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