Compact Shrub Rose Cultivar for Continuous Bloom and Disease Resistance

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Solution Overview

Problem

There is a need for a compact shrub rose variety that exhibits vigorous growth, continuous flowering, resistance to major fungal diseases, and winter hardiness in USDA cold hardiness zone 4, with unique ornamental features such as mounded and symmetrical plant habit, double flowers, and long peduncles.

Innovation Solution

The development of the 'ZLELisaAnnHansen' rose cultivar, characterized by a dense and symmetrical plant habit, vigorous growth, double flowers in clusters, medium to light pink petal color, and resistance to common fungal diseases, achieved through asexual reproduction by rooting softwood and semi-hardwood cuttings.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Shape

If the rose plant is bred for compact and mounded habit, then the plant size and symmetry are improved, but the flowering capacity and vigor may be reduced

Engineering Contradiction:

Improveplant habitVSAvoidflowering capacity

Core Design Contradiction:

ShapeVSProductivity

Solution Approach 1:

The patent applies parameter changes by selectively breeding for specific growth parameters (compactness, mounding) while maintaining or enhancing flowering parameters through controlled pollination and selection of superior genotypes that exhibit both compact habit and high flowering capacity

Inventive Principle:

Principle #35Parameter changes

2Productivity

If the rose plant is bred for vigorous growth, then the growth rate is improved, but the plant may become less compact and more prone to lodging

Engineering Contradiction:

Improvegrowth rateVSAvoidplant compactness

Core Design Contradiction:

ProductivityVSShape

Solution Approach 1:

The patent uses parameter changes by selecting for optimal growth rate parameters while maintaining compactness through controlled breeding, achieving a balance where vigorous growth does not compromise plant form or lead to lodging

Inventive Principle:

Principle #35Parameter changes

3Duration of action of moving object

If the rose plant is bred for continuous flowering, then the flowering duration is improved, but the energy consumption and disease susceptibility may increase

Engineering Contradiction:

Improveflowering durationVSAvoiddisease susceptibility

Core Design Contradiction:

Duration of action of moving objectVSObject-affected harmful factors

Solution Approach 1:

The patent converts the potential harm of continuous flowering (increased disease susceptibility) into a benefit by selecting for disease resistance traits alongside continuous flowering capability, creating varieties that maintain prolonged bloom while exhibiting resistance to major fungal diseases

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

4Reliability

If the rose plant is bred for disease resistance, then the health and hardiness are improved, but the ornamental features and flower quality may be compromised

Engineering Contradiction:

Improvedisease resistanceVSAvoidflower quality

Core Design Contradiction:

ReliabilityVSShape

Solution Approach 1:

The patent applies parameter changes by selecting for disease resistance parameters while simultaneously maintaining or enhancing ornamental parameters through controlled pollination and selection of progeny that exhibit both traits, achieving a balance between health and aesthetic quality

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUSPP36905P2Shrub rose plant named ‘ZLELisaAnnHansen’

Publication Date: 2025.09.02 ZLESAK DAVID CHARLES

AI summary

‘ZLELisaAnnHansen’ is a new and distinct cultivar of Rosa hybrida having a mounded, well-branched, very compact plant habit; vigorous growth; double flowers typically borne in clusters of 8 or more; flowers with relatively long and straight peduncles that elevate and separate individual flowers; medium to light pink petal color; continuous flowering throughout the growing season; resistance to major fungal diseases impacting roses; and ability to root and grow vigorously from softwood and semi-hardwood stem cuttings.