1. Which part of the plant name Gleditsia triacanthos “Sunburst” denotes the cultivar?

1. Gleditsia
2. triacanthos
3. ‘Sunburst’
4. Gleditsia triacanthos

 

2. Yellow coloration of a leaf caused by nutritional failure, disease or other causes is called:

1. Necrosis
2. Damping off
3. Mutation
4. Chlorosis

 

3. In a 20 lb. bag of 10-10-10 general-purpose plant food the actual content of the three main ingredients in the mixture would be:

1. 3 pounds each
2. 6.33 pounds each
3. 2 pounds each
4. 5 pounds each

 

4. In the trunk and branches of woody plants the
   __ forms the xylem and phloem.

1. Cotyledons
2. Chlorophyll
3. Glucose
4. Cambium

 

5. The planting hole for the tree should be 2-3 times the diameter and 2 times the depth of the root ball

1. True
2. False

 

6. A good rule of thumb for cutting a lawn is to never remove more than:

1. One half of the leaf blade per mowing
2. One third of the leaf blade per mowing
3. Two thirds of the leaf blade per mowing
4. 75% of the leaf blade per mowing
5. 10% of the leaf blade per mowing

 

7. The main cause of accidents is:

1. Machine failure
2. Site hazards
3. Distraction
4. Human error

 

8. Residential landscape design in comprised of divisions called:

1. Service, garden, access
2. Private, service, public
3. Public, lawn, private

 

9. According to landscape contract specifications topsoil should be tested by a recognized laboratory for pH and soluble salts.

1. True
2. False

 

10. Groundcovers are used in ‘sustainable’ landscaping to:

1. Replace lawn areas
2. Reduce weeds along pathways
3. Blend edge environments and transition areas
4. All of the above

Answers 3,4,3,4,2,2,4,2,1,4

Learn more about Certification