In response to Q: Northern Hemisphere vs Southern Hemisphere - Yvonne F., October 21, 2000 :
- We refer to degrees Celsius as opposed to the US degrees Fahrenheit. They are identical at -40 degrees, but the freezing point of water is 0 degrees Celsius (and 32 degrees Fahrenheit), and boiling water is at 100 degrees Celsius (and 212 degrees Fahrenheit).
Go to the link above to see a brilliant comparison of the two temperature scales.
Our fall (we call it autumn) is exactly the same as yours (i.e. it gets cooler and the nights become longer etc etc). But, it happens six months behind yours (i.e. when you are having spring, we are having fall in the Southern Hemisphere). From a protea-growing perspective the main differences depend on your climate. Normal (winter-rainfall) proteas are adapted to hot dry summers and cold, wet winters. We plant their seeds in our fall so the seedlings can grow strong before the dry summer.
However, if your winter is freezing and your summer moderate, you might want to plant your seeds in spring to give the seedlings a summer to strengthen before the frost.
From a seed germination perspective, spring and fall are much the same as the seed germination is triggered by temperature difference between day and night.
Celsius vs Fahrenheit conversion
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