Yes, Camellia sasanqua full sun works well in cooler zones like 7 and 8. You should give your plants some afternoon shade in hotter areas. How much direct light your sasanqua can handle depends on your local climate and summer heat levels.
I tested this myself by planting two of the same Yuletide variety in my Zone 8 yard. One went in a spot that got full sun for eight hours a day. The other landed under a large oak that filtered the afternoon light. The full-sun plant bloomed harder with three times more flowers than its shaded twin. But the shaded one had darker green leaves and never showed a single scorched tip. Your sasanqua sun requirements will shift based on your own climate and yard setup.
The International Camellia Society says you should plant your sasanquas where they face south or west for the best results. They point out that too much shade causes a leggy, thin habit and shy blooming. Your plant may grow tall and stretched out with few flowers if you tuck it into a dark corner. Sasanquas want light, and lots of it.
Now here's where things get tricky. NC State Extension and MSU both tell you to plant in partial shade. The International Camellia Society says full sun is fine. Both sides are right, but they're talking about different climates. If you garden in Zones 7 or 8 where summers stay under 95°F (35°C) most days, full sun works great. If you live in Zone 9 or warmer, your plants need afternoon shade to avoid heat stress.
I've watched my full-sun sasanqua struggle during one bad heat wave that pushed temps past 100°F (38°C) for a week straight. The leaf edges turned brown and crispy within days. I added a temporary shade cloth and the plant bounced back within a month. That experience taught me to watch my plants during extreme heat and act fast if you see leaf scorch forming.
You should also water your full-sun sasanquas more often than shaded ones. The July through September window matters most because that's when your flower buds form. Plants in hot, sunny spots lose moisture fast and may drop their buds before they open. Give your plants a deep soak once a week during this stretch to keep the blooms coming strong in fall.
Planting against a south or west-facing wall gives your sasanqua extra warmth in winter. This warmth protects flower buds from frost and can push your bloom season earlier by a week or two. The wall also reflects light back onto the plant, which helps fill in the side that faces your house. You get a fuller, more balanced shape this way.
Figuring out your camellia sasanqua light needs comes down to knowing your zone and watching your plants. Dark green leaves and lots of blooms mean your light level is right. Scorched leaves or dropped flowers tell you the spot is too hot and you need more shade. A tall, thin plant with few flowers needs more sun. Let your sasanqua tell you what it wants and adjust from there.
You can also test different spots in your yard by moving a potted sasanqua around for a full season before you plant it in the ground. I did this with a Setsugekka variety and found the perfect spot along my front walkway. It gets six hours of morning sun and shade after 2 PM. That plant gives me the best blooms of any sasanqua I own. A little trial and error with your light setup pays off for years to come.
Read the full article: Camellia Sasanqua Varieties and Care
