Level 1 · Wine & Spirits Exam Prep
Growing Grapes
How climate, soil, and viticultural practices shape the grapes that become wine.
Topics covered
- Climate and terroir
- Vine training systems
- Harvest timing
- Key wine regions
Level 1 Study Guide
Fermentation Basics
Quick Revision
- Best growing latitude: 30–50° (both hemispheres)
- Cool climate = high acidity, lower alcohol
- Warm climate = lower acidity, higher alcohol
- NH harvest: Sep–Oct; SH harvest: Mar–Apr
- Vines like well-drained soils
- Hazards: frost, hail, rot, drought
Key Facts for the Exam
- Grapes grow best between 30° and 50° latitude in both hemispheres
- Cool climates produce higher acidity and lower sugar; warm climates produce lower acidity and higher sugar
- The Northern Hemisphere harvest is September–October; Southern Hemisphere is March–April
- Vines need well-drained soils — waterlogged roots harm vine health
- Sunlight ripens grapes and builds sugar; rain and cold slow ripening
- Frost, hail, rot, and drought are the main vineyard hazards
Level 1 Exam Tips
- 1.Climate directly affects acidity and alcohol — cool = high acid/low alcohol, warm = low acid/high alcohol.
- 2.Know the harvest timing for both hemispheres — a favourite trick question.
- 3.Well-drained soil is key: WSET often tests why vines prefer it (prevents disease, forces roots deep).
- 4.Temperature range for grape growing: 30–50° latitude is the classic answer.
Common Exam Mistakes
- ✗Swapping Northern and Southern Hemisphere harvest months — remember Australia harvests in March/April
- ✗Assuming more rain is always better — excess rain before harvest dilutes grapes and causes rot
- ✗Forgetting that high altitude compensates for warm latitude by cooling temperatures
Related Topics
Frequently Asked Questions
- Why can't grapes grow everywhere in the world?
- Grapes need a specific balance of warmth, sunlight, and water. Too cold and grapes won't ripen; too hot and they lose acidity and become flabby. The ideal zone is between 30° and 50° latitude.
- What is the difference between Old World and New World wine regions?
- Old World refers to traditional European wine regions (France, Italy, Spain). New World refers to regions outside Europe (Australia, USA, Chile, South Africa). New World regions tend to have warmer, more consistent climates.
- How does climate affect wine style?
- Cool climates produce wines with higher acidity and lower alcohol — think Champagne or German Riesling. Warm climates produce riper, fuller-bodied wines with lower acidity — like Australian Shiraz or Argentinian Malbec.