Calla lily 
Agapanthus
African violet
That you shouldn't poke sleeping lions with a walking stick

2. What is girdling?

The wrapping of shrubs for winter protection
How an aphid chews its way around the stem of a plant
Something best forgotten
Choking of a branch by a wire or other material 

3. What is humus? 

Well rotted manure
A Parking lot full of four-wheeled environmental disasters
Pureed chickpeas
No one is surel

4. What is the common name for pelargonium?

Livingstone daisy
Geranium
Chrysanthemum
Souvenir shop at the Vatican

5. An indeterminate tomato plant . . . 

Will grow in any type of soil
Is a result of cross pollination
Grows, flowers, and sets fruit over the entire growing season
Can't be relied upon to produce fruit

6. Poinsettias prefer a location that is . . . 

Bright and sunny with temperatures around 15C (60F)
The focus of attention (top of TV)
Partly sunny with a temperature around 21C (70F)
Bright, sunny, and warm

7. What property does corn gluten possess?

It's believed to inhibit the germination of crab grass seeds
It is a source of potassium
When added to cattle feed, it keeps cows regular
When sprayed on corn it deters pests 

8. Where would be the best place to plant Aegopodium podagaria (goutweed)?

In a rock garden
Where nothing else will grow 
Along the border of a flowerbed
On another planet

9. Zucchini originated . . . 

In ancient Mexico
In southern Italy
Along the Euphrates river
Alice Springs

10. What is Duck's Foot?

A term for the measurement of the surface area of a pond 
A rubber boot with a hole in it 
An aquatic plant
A variety of Coleus

11. Clematis should be pruned .  .  . 

Anytime it doesn't bloom
Immediately after blooming
Never
Only if you've studied the clematis pruning rules

12. What is a clair-voyée?

A plant with open foliage
An opening in a wall to provide a garden view 
Greenhouse glass cleaner
A plant that grows through the fence from your neighbour’s garden

13. Where would you find farina?

In rose dust
In a bag of fertilizer
On the leaves and flowers of a primrose
On your cornflakes 

14. What is pricking out?

Aerating the lawn with the old man's golf shoes
Using a sharp stick to dispatch slugs
Separating seedlings for transplanting 
Loosening compacted soil in flowerbeds

15. What is an ericaceous plant?

A plant that favours an alkaline soil
A plant best suited for containers
A plant that survives on minimum amounts of moisture
A plant that grows best in acidic soil 

16. Who is David Austin?

A famous rose grower
An early explorer of Texas 
A clematis breeder 
A well known TV gardener 

17. What is air-layering?

How frost pockets form in low areas of the garden
A flower drying technique
A means of propagation
What happens when a full wash line of laundry blows into the flowerbed

18.How does the nutrient potassium help plants?

Increases the size and number of blooms
Helps them resist disease
Improves the flavour of vegetables
Encourages root growth

19.What is a biennial plant?

One that flowers twice a year
One that flowers every second year
One that completes its life cycle in two seasons
One that is sold in a two for one sale

20. What is leaf mold?

Brown crumbly compost consisting of decomposed leaves
Reddish brown splotches on dead hollyhock leaves
Black spots on maple leaves
Grey powdery stuff found on honeysuckle leaves