Roses Care
What causes rose heads, petals, and stems to rot?
Botrytis (rose mold) is an airborne fungal disease that attacks roses. It loves water and cold temperatures.
What causes dehydration and bent neck in roses?
If flowers have been kept dry too long, the vascular system can become blocked and solution can’t flow through the vessels. Also, flowers not conditioned long enough or conditioned in plain water can experience the problem, as can roses placed in foam before being fully hydrated.
Why do some roses not open completely?
- -Flowers may have been cut too tightly at harvest to ensure continued bloom development.
- -Hydration problems can also inhibit buds from opening and several conditions contribute to this. For example, some flowers lack the proper nutrient supply to ensure bud opening and bloom development. Also, if you remove too much foliage, you can reduce the flowers ability to pull solution into the bud. Flowers processed or displayed in tap water or placed in a deficient amount of flowerfood solution negatively affect hydration as well.
- -Dirty vases or containers can result in bacteria, which can clog the roses vascular system
- Tip: To manage hydration problems, re-cut stems 1 ½ to 2 inches from the rose stems and measure the correct dose of flower food. (If necessary you may need to inform your supplier that the cut-point of the bud was too tight.)
What causes soft rose heads?
Dehydration, Insufficient flower food, old blooms
Tips:
- -To prevent air embolisms, bacteria, or botrytis, avoid wounding the bark when de-thorning (Flowerama does not recommend dethorning).
- -Remove only foliage that will fall below the solution level.
- -Use fresh-flower food.
- -Re-cut roses every time you change the vase water.
- -Avoid temperature fluctuation.
Why do roses open too quickly?
This can be the result of a temperature problem, rose variety, or flower age.
What causes a head to snap off at the first node?
Temperature fluctuations cause a layer of callous tissues to develop at the first node. This is especially true when the leaves are
opposite the first node or the variety has a long neck. To avoid snapping the heads off roses, handle them with care. If the heads do snap off, use the broken heads for pavé arrangements.