Hardy Geranium (Geranium ‘Tanya Rendall’)

Plant: Table of Contents

What is the Hardy Geranium (Geranium ‘Tanya Rendall’)?

Hardy geraniums, also known as cranesbills, are a diverse group of perennial plants that are adored by gardeners for their easy-going nature, beautiful flowers, and attractive foliage. Among the numerous varieties available, Geranium ‘Tanya Rendall’ stands out for its unique characteristics and versatility in gardens and landscapes.

In this comprehensive guide, we will explore the cultural requirements, uses, propagation techniques, common pests and diseases, and much more about the Hardy Geranium ‘Tanya Rendall’. Whether you are a seasoned gardener looking to enhance your understanding of this cultivar or a beginner eager to learn about its care, this guide will provide you with valuable insights and practical tips.

Key Takeaways – Hardy Geranium (Geranium ‘Tanya Rendall’)

Before delving into the specifics of Geranium ‘Tanya Rendall’, let’s quickly highlight the key takeaways of this distinctive plant:

  • Cultural Requirements: Understanding the optimal growing conditions for the ‘Tanya Rendall’ cultivar, including its water, sunlight, fertilizer, soil, and pruning needs.
  • Uses: Exploring the various practical and aesthetic uses of this hardy geranium in gardens, landscapes, containers, and more.
  • Propagation: Learning effective methods for propagating Geranium ‘Tanya Rendall’, whether from seeds or through other propagation techniques.
  • Pests and Diseases: Identifying common pests and diseases that affect this cultivar and implementing preventive measures for their management.
  • Botanist’s Tips: Gaining expert insights and recommendations for successfully cultivating and caring for Hardy Geranium ‘Tanya Rendall’.
  • Fun Facts: Discovering interesting and lesser-known facts about this unique geranium cultivar.

Now, let’s embark on a detailed exploration of Geranium ‘Tanya Rendall’ and equip ourselves with the knowledge needed to nurture and appreciate this exceptional plant.

Plant Name: Hardy Geranium (Geranium ‘Tanya Rendall’)

Geranium ‘Tanya Rendall’ belongs to the diverse and beloved group of hardy geraniums, which are prized for their resilience, adaptability, and ornamental value. This particular cultivar exhibits a range of characteristics and features that make it a sought-after addition to gardens and landscapes.

Cultivar Information

With a solid understanding of this cultivar’s name and basic attributes, let’s now delve into the specifics of its cultural requirements, uses, propagation, and other essential aspects.


Cultivating Hardy Geranium ‘Tanya Rendall’ involves paying attention to several key factors to ensure its optimal growth and performance. From water and sunlight needs to proper soil conditions and pruning techniques, understanding the cultural requirements is essential for successfully nurturing this distinct geranium variety.


Proper watering is crucial for the health and vigor of Geranium ‘Tanya Rendall’. Being mindful of the following watering guidelines can contribute to the plant’s overall well-being:

  • Ensure well-draining soil to prevent waterlogging, which can lead to root rot.
  • Water deeply but infrequently, allowing the soil to partially dry out between watering sessions.
  • During hot and dry periods, provide supplemental irrigation to maintain adequate moisture levels.
  • Avoid overhead watering to prevent foliage diseases and aim to water at the base of the plant.

Understanding the water needs of this cultivar and implementing efficient watering practices can play a significant role in its successful cultivation.


Like many hardy geranium varieties, Geranium ‘Tanya Rendall’ thrives in specific light conditions. Consider the following sunlight requirements when selecting a growing location for this cultivar:

  • Full Sun: Ensure that the plant receives at least 6-8 hours of direct sunlight daily for optimal flowering and overall growth.
  • Partial Shade: In regions with intense afternoon sun or during exceptionally hot summers, providing partial shade during the hottest part of the day can benefit the plant.
  • Adaptability: ‘Tanya Rendall’ can also tolerate dappled shade, especially in areas with scorching summers or in regions with intense sunlight.

Understanding the sunlight preferences of this geranium cultivar and providing suitable light conditions can significantly impact its performance in the garden or landscape.


Applying the right fertilizers at the appropriate times can enhance the growth and flowering potential of Geranium ‘Tanya Rendall’. Consider the following guidelines for effective fertilization:

  • Balanced Fertilizer: Use a balanced, all-purpose fertilizer with an N-P-K ratio of 10-10-10 or similar, applying it in early spring as new growth emerges.
  • Moderate Application: Avoid over-fertilization, as excessive nutrients can lead to lush foliage at the expense of flowers.
  • Topdressing Option: Alternatively, opt for topdressing with compost or well-rotted manure in early spring to provide a slow release of nutrients throughout the growing season.

By providing appropriate fertilization, gardeners can support the healthy and vigorous growth of this hardy geranium cultivar.


Understanding the soil preferences of Geranium ‘Tanya Rendall’ and ensuring appropriate soil conditions are crucial for its cultivation. Consider the following soil-related aspects:

  • Well-Draining Soil: Provide well-draining soil to prevent waterlogging and root rot, as hardy geraniums are susceptible to root decay in excessively wet conditions.
  • Neutral to Slightly Alkaline pH: Aim for a soil pH ranging from 6.0 to 7.5, as hardy geraniums typically prefer slightly alkaline conditions and can thrive in neutral soil as well.
  • Soil Amendments: Incorporate organic matter such as compost or well-rotted manure when planting to enhance the soil structure, fertility, and moisture retention capabilities.

By attending to the soil requirements and ensuring favorable soil conditions, gardeners can lay a solid foundation for the successful growth and development of Geranium ‘Tanya Rendall’.


Proper pruning practices can help maintain the attractive appearance of Geranium ‘Tanya Rendall’ and promote its overall health and vigor. Consider the following pruning guidelines for this cultivar:

  • Deadheading: Regularly remove spent flowers to encourage continuous blooming and prevent the plant from expending energy on seed production.
  • Renovation Pruning: Perform renovation pruning in late summer or early fall by cutting back the entire plant to rejuvenate its growth and enhance its appearance.
  • Spring Cleanup: In early spring, prune away any winter-damaged or dead foliage to promote healthy new growth and prevent the spread of diseases.

Understanding the appropriate pruning techniques and timing can contribute to the longevity and visual appeal of this hardy geranium cultivar.


Geranium ‘Tanya Rendall’ offers a wide range of uses in gardens, landscapes, containers, and various other settings, making it a versatile and valuable addition to horticultural spaces.

Garden Planting

In garden settings, ‘Tanya Rendall’ can be used in various ways to enhance the visual appeal and ecological value of the landscape:

  • Borders and Edges: Plant along borders and edges to create a cohesive and well-defined garden space, with its lush foliage and beautiful flowers contributing to the overall aesthetic.
  • Mixed Plantings: Incorporate ‘Tanya Rendall’ into mixed plantings to add pops of color and texture, complementing other plants with its versatile nature.
  • Rock Gardens: Its low-growing and spreading habit makes it an ideal choice for rock gardens, where it can thrive in the well-draining and slightly alkaline conditions often found in such environments.
  • Herbaceous Borders: Integrate this hardy geranium cultivar into herbaceous borders to create dynamic and visually appealing compositions, adding both color and structure to the planting scheme.
  • Cottage Gardens: Embrace ‘Tanya Rendall’ in cottage garden designs, where its charming appearance and low-maintenance nature align well with the informal and relaxed atmosphere of cottage-style landscapes.

By strategically incorporating Geranium ‘Tanya Rendall’ into garden settings, gardeners can achieve a myriad of aesthetic and functional benefits while fostering a thriving and dynamic plant community.

Container Gardening

The versatile nature of ‘Tanya Rendall’ makes it well-suited for container gardening, offering opportunities to enhance outdoor and indoor spaces in a variety of ways:

  • Patio Containers: Utilize containers of varying sizes and designs to showcase ‘Tanya Rendall’ on patios, balconies, and other outdoor living areas, adding color and visual interest.
  • Hanging Baskets: Plant ‘Tanya Rendall’ in hanging baskets to create cascading displays of foliage and flowers, bringing an element of elegance and charm to elevated spaces.
  • Indoor Use: Bring the beauty of this hardy geranium indoors by using it as a potted plant, adding a touch of nature and vibrancy to interior spaces with adequate sunlight.

Incorporating Geranium ‘Tanya Rendall’ into containers allows for creative expression and flexibility, enabling gardeners to enjoy its ornamental qualities in diverse settings.

Landscape Applications

When utilized in larger landscaping projects, ‘Tanya Rendall’ can contribute to the overall landscape’s aesthetics, functionality, and ecological value:

  • Groundcover: Due to its spreading habit and ability to form dense mats of foliage and flowers, ‘Tanya Rendall’ can serve as an effective groundcover, suppressing weed growth and stabilizing soil.
  • Pollinator Gardens: Attract pollinators such as bees, butterflies, and hummingbirds by incorporating ‘Tanya Rendall’ into pollinator-friendly garden spaces, where its nectar-rich flowers can support local wildlife.
  • Wildlife Gardens: Create wildlife-friendly landscapes by including ‘Tanya Rendall’ in plantings, providing habitat and forage for various beneficial insects and small animals.

By strategically integrating Geranium ‘Tanya Rendall’ into landscape designs, landscape architects and gardeners can achieve multiple ecological and aesthetic objectives while promoting biodiversity and sustainability.

Understanding the various uses of Geranium ‘Tanya Rendall’ in garden, container, and landscape settings can inspire gardeners and horticultural enthusiasts to explore its potential in diverse contexts, shaping vibrant and thriving horticultural spaces.


Propagating Geranium ‘Tanya Rendall’ can allow for the expansion of its presence in gardens and landscapes, enabling enthusiasts to share and cultivate this exceptional cultivar. Whether through seeds, division, or other propagation techniques, the following information provides insights into successful propagation methods.

Growing from Seeds

Germinating ‘Tanya Rendall’ from seeds can be an accessible and rewarding method of propagation, following a series of essential steps and considerations:

  1. Seed Collection: Harvest mature seeds from the plant by collecting seed pods or purchasing reliable seeds from reputable suppliers.
  2. Seed Starting: Sow the seeds indoors in seed-starting trays or pots filled with well-draining, moistened potting mix.
  3. Optimal Conditions: Place the seed containers in a warm, bright location, ensuring consistent moisture and maintaining appropriate humidity levels.
  4. Seedling Care: Once the seeds germinate and seedlings emerge, provide gentle air circulation, sufficient light, and gradual acclimatization before transplanting them into the garden or larger containers.

Effectively growing ‘Tanya Rendall’ from seeds can lead to the production of vigorous and genetically diverse plants, enriching garden and landscape settings with new additions of this exceptional cultivar.


Dividing established plants of Geranium ‘Tanya Rendall’ offers a practical and straightforward method for propagation, involving the following essential steps:

  1. Timing: Choose an appropriate time for division, preferably in early spring before new growth begins or in late summer after the plant’s peak flowering period.
  2. Digging: Carefully lift the entire plant from the ground, gently shaking off excess soil to expose the root system.
  3. Division Process: Use a sharp, sterile tool to divide the root mass into individual sections, ensuring that each division possesses healthy roots and shoots.
  4. Replanting: Plant the divided sections in prepared garden beds or containers, providing adequate water and essential care following division.

Successfully dividing ‘Tanya Rendall’ allows for the expansion of its presence in gardens and landscapes, multiplying the ornamental and ecological benefits it offers.

Other Propagation Techniques

In addition to seed sowing and division, ‘Tanya Rendall’ can also be propagated through other methods such as stem cuttings and layering, offering alternative approaches to expanding its cultivation.

  • Stem Cuttings: Select healthy and non-flowering stems, propagate them in a moistened rooting medium, and provide suitable environmental conditions for root development.
  • Layering: Encourage adventitious root formation on stems by allowing them to come into contact with the soil, promoting the development of independent plants.

By exploring and implementing various propagation techniques, gardeners can propagate Geranium ‘Tanya Rendall’ effectively, expanding its presence and enhancing horticultural diversity.

Understanding the propagation methods and techniques specific to ‘Tanya Rendall’ empowers gardeners and enthusiasts to propagate and share this exceptional cultivar, contributing to its widespread cultivation and appreciation within horticultural communities.


Hardy Geranium ‘Tanya Rendall’ has gained popularity among gardeners, landscapers, and horticultural enthusiasts for its unique characteristics and versatile nature, leading to its widespread cultivation and appreciation.

Gardening Community

Within the gardening community, ‘Tanya Rendall’ has garnered attention and acclaim for its distinctive features, contributing to its popularity and widespread cultivation in diverse garden settings:

  • Aesthetic Appeal: Gardeners are drawn to the attractive flowers and foliage of ‘Tanya Rendall’, appreciating its ornamental value and versatility in various garden styles and designs.
  • Adaptability: Its resilience and adaptability in different climate zones and growing conditions make ‘Tanya Rendall’ a sought-after plant among gardeners seeking low-maintenance and versatile additions to their landscapes.
  • Ecological Benefits: The ecological contributions of ‘Tanya Rendall’, including its value to pollinators and potential role in supporting local wildlife, further enhance its appeal and popularity within ecologically-minded gardening communities.

By resonating with the preferences and values of gardeners, Hardy Geranium ‘Tanya Rendall’ has solidified its status as a popular and esteemed plant within the gardening community.

Horticultural Trade

In horticultural trade and nurseries, ‘Tanya Rendall’ has become a coveted offering, attracting enthusiasts and consumers seeking to incorporate this distinctive plant into their horticultural spaces:

  • Availability: The availability of ‘Tanya Rendall’ as potted specimens and bare-root divisions in nurseries and garden centers has contributed to its widespread adoption and cultivation by home gardeners and landscaping professionals.
  • Prominence in Catalogs: Its inclusion in horticultural catalogs and online plant listings has showcased the unique qualities and distinctiveness of ‘Tanya Rendall’, further elevating its popularity and desirability among plant enthusiasts.
  • Cultivar Diversity: The availability of ‘Tanya Rendall’ alongside other hardy geranium varieties has enabled a broader exploration of cultivar diversity and preferences, highlighting its appeal within the context of available options.

The popularity and widespread availability of Geranium ‘Tanya Rendall’ in horticultural trade channels have contributed to its embrace and adoption by plant enthusiasts and gardening professionals alike.

Understanding the factors contributing to the popularity of Hardy Geranium ‘Tanya Rendall’ provides insights into its appeal, relevance, and value within the horticultural community, reinforcing its significance as a cherished plant among enthusiasts and professionals.

Common Diseases

Like many plants, Geranium ‘Tanya Rendall’ is susceptible to certain diseases that can impact its health and appearance. Recognizing and understanding these common diseases is crucial for implementing preventive measures and timely interventions to safeguard the plant’s well-being.

Disease Diagnosis and Management

Several diseases can affect ‘Tanya Rendall’, manifesting in various symptoms and requiring specific management strategies for effective control:

  1. Botrytis Blight: This fungal disease can lead to the development of gray mold on foliage, buds, and flowers, often exacerbated by prolonged periods of wet and humid conditions. Implementing proper ventilation and avoiding overhead irrigation can reduce the risk of Botrytis blight.
  2. Powdery Mildew: Recognized by the powdery white growth on leaves, powdery mildew can impact ‘Tanya Rendall’ during periods of high humidity. Providing good air circulation and maintaining adequate spacing between plants can help prevent and manage powdery mildew.
  3. Root Rot: Excessive moisture and waterlogged soil can lead to root rot in Geranium ‘Tanya Rendall’, causing wilting, yellowing foliage, and eventual plant decline. Ensuring well-draining, healthy soil and proper watering practices are essential for preventing root rot.
  4. Leaf Spot: Fungal leaf spots on the foliage can develop due to excessive moisture and poor air circulation, potentially leading to defoliation and reduced plant vigor. Pruning out affected foliage and promoting better air movement can aid in managing leaf spot.

By familiarizing oneself with the symptoms and management strategies for these common diseases, gardeners can proactively safeguard the health and vitality of ‘Tanya Rendall’ while promoting its resilience in garden and landscape settings.

Common Pests

In addition to diseases, certain pests can pose challenges to the well-being of Geranium ‘Tanya Rendall’, requiring vigilant monitoring and appropriate management measures to mitigate their impact on the plant’s health.

Pest Identification and Control

Identifying and addressing common pests associated with ‘Tanya Rendall’ allows for targeted pest management and the preservation of the plant’s vitality:

  1. Aphids: These small, sap-sucking insects can cluster on the new growth and undersides of leaves, potentially causing wilting and distortion of foliage. Control aphids by using a strong stream of water or insecticidal soap, promoting natural predators, and practicing good garden hygiene.
  2. Spider Mites: Infestations of spider mites can lead to stippled and discolored foliage, often accompanied by webbing on the plant. Mitigate spider mite populations through judicious watering, introducing natural predators, and utilizing horticultural oils or insecticidal soaps.
  3. Slugs and Snails: These mollusks can feed on the foliage and flowers of ‘Tanya Rendall’, causing unsightly damage and impacting the plant’s aesthetics. Employ physical barriers, organic repellents, and hand-picking to manage slug and snail populations effectively.

By promptly addressing and managing common pests, gardeners can preserve the visual appeal and vigor of Geranium ‘Tanya Rendall’, ensuring its successful cultivation and performance in horticultural spaces.

Botanist’s Tips

Gleaned from the expertise of botanists and horticultural professionals, the following tips provide valuable insights and recommendations for the successful cultivation and care of Hardy Geranium ‘Tanya Rendall’:

Tip #1: Select Optimal Growing Location

Choose a well-drained site

Picture of Peter Taylors

Peter Taylors

Expert botanist who loves plants. His expertise spans taxonomy, plant ecology, and ethnobotany. An advocate for plant conservation, he mentors and educates future botanists, leaving a lasting impact on the field.