How To Grow Beautiful Annual Vinca
Vinca like it sunny, hot and dryer than a lot of plants. The dark, glossy-green foliage and bright flowers add color to our flower beds and pots from April through the first hard freeze. They bloom consistently, and don’t require deadheading of their flowers.
What they don’t like is to be overwatered or to be planted in poor draining soil. If your vinca turns yellow, it’s too wet. Either too much water or the soil is too wet – one of these is the problem. They almost melt away (like the Wicked Witch who had water issues too) or rot from being too wet.
One solution is to plant them in a raised area that is higher than the surrounding ground level. This allows the water to drain away faster. You can create this higher ground by adding soil to the area or form a berm to plant them on.
Feed them with a water soluble fertilizer like Schultz weekly to help them produce even more flowers.
TRAILING OR CASCADING VINCA
You will find these in many of the same colors as standard vinca. The difference is in their growth habit – they drape or cascade over the side of the container instead of growing upright.
These are perfect in hanging baskets, they are nice and full, bloom nonstop and cascade as much as 12” over the side of the basket, Use them as a spiller (thriller, filler, spiller) in containers or create a carpet of flowers by planting in beds. Use water soluble fertilizer on them weekly to keep them healthy.