In North Central Texas, the transition from spring to summer is tricky. Cool-season favorites fade as the heat builds, leaving gaps in the landscape. The solution lies in combining plants that overlap in performance. Early spring bloomers, such as pansies, may hang on through May, but as these plants falter, it’s time to incorporate plants that appreciate warm weather.
This is where geraniums shine. They are some of the most dependable plants for bridging these seasonal gaps, particularly because they are outstanding when planted in containers. Available in myriad colors, these blooming beauties tolerate the cooler nights of late spring while embracing the higher daytime temperatures that arrive in May.
When most gardeners refer to geraniums, they envision large-flowered annual plants. Although commonly called geraniums, these annuals are members of the Pelargonium genus and botanically not true geraniums. True geraniums are hardy perennials referred to as cranesbills, which are less common in Texas landscapes because they struggle in hot summers. If desired, use them as low, spreading perennials in partially shaded areas. They have smaller, more delicate flowers and a shorter bloom season compared to their annual counterparts.
Many types of annual geraniums exist with each kind having its own strengths and ornamental value. Zonal geraniums are the classic choice. They are recognized by their rounded flower clusters. Many have dark markings on their somewhat velvety-textured leaves. They offer bold red, pink, white and coral flowers and are well suited to containers. Ivy geraniums have a trailing habit and glossy, ivy-shaped leaves. They are ideal for hanging baskets, window boxes and the edges of large containers where their stems spill gracefully over the sides.
Scented geraniums, also considered herbs, are grown as much for their aromatic foliage as for their flowers. Their leaves carry the fragrance of rose, lemon, mint or spice. These can be tucked into containers near patios or entryways where their scent can be appreciated. Regal geraniums produce large, showy blooms, often with dramatic color patterns. While stunning, they prefer mild temperatures and are best enjoyed in early spring.
Zonal and ivy geraniums are the stars of the season. Their adaptability, color range and resilience make them popular choices, but the way they beautifully combine with both trailing and upright companions makes them classic container plants. White, pink, salmon or lavender geraniums pair especially well with the fading tones of spring flowers while bold reds and corals signal summer’s arrival.
Although annual geraniums are said to thrive in full sun, in Texas they benefit from full sun in early-to-mid spring and morning sun/afternoon shade in summer. Perennial geraniums are shade-tolerant and need protection from harsh afternoon sun.
Water geraniums thoroughly when the top inch of the soil feels dry, but avoid overwatering. Geraniums dislike soggy soil. It’s best to let the soil dry slightly between waterings rather than letting it be constantly wet. Use a high-quality potting mix in containers and ensure that pots drain well. Fertilize every 2-3 weeks with a balanced, water-soluble fertilizer. Remove spent flower clusters to promote new blooms and pinch back leggy stems to create more compact plants. As summer progresses, geraniums may slow or halt their bloom. Regular maintenance will help them to rebound when temperatures moderate. Geraniums will become the cornerstone of your transitional garden!
Written and Photographed by LGMG Phyllis Webster
