SUNSTAR® Pentas
Sunstar pentas boast extra-large flower clusters - some nearly the size of hydrangea blooms - atop well-branched plants. They have excellent summer durability, blooming well through high heat and humidity, and they make ideal bedding and container plants for hot climates.
It should be noted that some house plants are more vulnerable to cold damage than others and when the thermometer dips – they can suffer. Some of those more sensitive to cold temperatures: Orchids (Phaleanopsis sp.), Mandevilla, Bougainvillea, Oriental Hibiscus, and Poinsettia.
Most plants prefer a temperature of no less than 60° F, though many can tolerate as low as 40° F. Along with this, while the improper temperature can certainly be an issue, fluctuations in temperature are the true killer. Learn the ideal temperatures for your green friends so they can be healthier and happier.
Geraniums have always been known to tolerate heat better than most plant species, but the recent development of hybrid geraniums has meant varieties that can take on tough climates like Texas and Arizona, where 100-plus-degree summers are the norm.
Dogwood. Many dogwood varieties don't need sun and will tolerate partial- to full-shade conditions. One spectacular species to try is Cornus florida, a tree with reddish-purple fall color surpassed only by its famous white flowers in spring.
Welwitschia mirabilis: The world's toughest plant.
Hostas. Hostas can be one of the easiest outdoor plants to grow—as long as deer and slugs don't frequent your garden. (Natural repellents are available if you love hostas and have these unwelcome visitors.) Varieties of this perennial range from tolerating dappled sun to accepting part sun, such as 'Liberty' hosta.
Cacti and succulents are obvious examples of plants capable of surviving with little water, and some species such as Adam's needle, beehive cactus, and prickly pears can provide that Southwest look while being hardy even in the Upper Midwest.
The general answer is around 90 degrees F, with some exceptions to the rule. This means that when temps rise above 90 and remain there for a lengthy spell: Leaves wilt. Water evaporates into the atmosphere more quickly in high heat, draining a plant's reserves.
Answer: Geraniums aren't pleased with temperatures of 90 degrees and above, and as a result, they're really better off being used as spring color in containers from late February or early March through May.
For geraniums, high growing temperatures above 85 degrees Fahrenheit can result in bleaching and chlorosis of the leaves. In this instance, the zonal geranium hanging baskets were in front of unit heaters that lead to the heat stress symptoms.
Geraniums are sun lovers and need at least 6-7 hours of sun per day and cope well with harsh afternoon sun. If planted in the semi-shade or dappled shade, they will grow long and lanky, get diseases, and not flower as profusely.
Zinnias are a group that originally came from Latin America. According to the Denver Post, these lush-petaled asters love the summer heat. They bloom June through November in an array of fruity hues from deep, dark pink to honeydew green.
A: The short answer is there are no impatiens that thrive in direct sun all day. Yes, the plants mentioned will tolerate sun but they do much better in part sun. New Guinea, Bounce and SunPatiens are all impatiens that will tolerate much more sun than the traditional ones (Impatiens walleriana).
Temperatures between 38ºF and 55ºF won't kill tomato plants, but keeping them covered for an extended amount of time can. Remove coverings in the morning or once temperatures rise over 50ºF to give them extra light and warmth.
When Should You Cover Plants? Cover your plants at night and remove them during the day when the temperatures rise above 32 degrees F, so that the soil can warm up again. Some outdoor plants won't survive the harsh conditions of winter, bring them inside and use these tips for caring for them through winter.
During winter, geraniums grow best with night temperatures of 50° to 60°F (10° to 16°C) but will survive if they drop to 32°F (0°C) and/or rise above 80°F (27°C), as long as they are kept relatively dry. When new growth appears in the spring, cut off all the old leaves.