EviGsy154 Clematis Cultivar Combining Compact Growth And Repeat Blooming

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Solution Overview

Problem

Existing Clematis cultivars lack compact growth habits with large, consistently dark red flowers and repeat blooming capabilities, and often exhibit susceptibility to pests and diseases.

Innovation Solution

Development of the Clematis cultivar 'EviGsy154', which features a compact plant habit, large dark red flowers with yellow anthers, repeat flowering from May to July and re-blooming in late August and September, and resistance to pests and diseases, achieved through controlled cross-breeding and asexual propagation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Shape

If existing Clematis cultivars are used, then they may have large flowers, but they lack compact growth habits and repeat blooming capabilities

Engineering Contradiction:

Improveplant habit compactnessVSAvoidrepeat blooming capability

Core Design Contradiction:

ShapeVSProductivity

Solution Approach 1:

The patent merges multiple desirable traits from different parent plants through controlled cross-breeding. The female parent (Clematis patens) contributes large flower size and the male parent (Clematis viticella) contributes compact growth habit, combining these traits in the hybrid cultivar 'EviGsy154' to achieve both compactness and large flowers with repeat blooming

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The breeding program systematically varies genetic parameters through controlled crosses and selection to optimize multiple traits simultaneously. The cultivar 'EviGsy154' represents an optimized parameter set achieving compact plant habit (90-120 cm height), large flower diameter (10-12 cm), and extended repeat blooming period, resolving the contradiction between compactness and productivity

Inventive Principle:

Principle #35Parameter changes

2Reliability

If existing Clematis cultivars are used, then they may flower, but they exhibit susceptibility to pests and diseases

Engineering Contradiction:

Improvepest and disease resistanceVSAvoidflowering performance

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The patent converts the potential harm of genetic susceptibility to pests and diseases into a benefit by selecting parent plants with demonstrated resistance traits. The hybrid cultivar 'EviGsy154' inherits enhanced resistance from its parents while maintaining excellent flowering performance, transforming the weakness of existing cultivars into a strength through careful parent selection and hybridization

Inventive Principle:

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

3Ease of manufacture

If existing Clematis cultivars are used, then they may have consistent flower color, but they lack the specific dark red color with yellow anthers

Engineering Contradiction:

Improveflower color consistencyVSAvoidunique flower coloration

Core Design Contradiction:

Ease of manufactureVSProductivity

Solution Approach 1:

The patent applies local quality by developing specific color characteristics in particular parts of the flower. The cultivar 'EviGsy154' exhibits consistent dark red coloration in the tepals combined with contrasting yellow anthers, creating a distinctive local color pattern that is uniformly reproduced across all flowers through stable genetic inheritance from the parent plants

Inventive Principle:

Principle #3Local quality

Data Source

PatentUSPP37085P2<i>Clematis </i>plant named ‘EviGsy154’

Publication Date: 2025.11.04 RAYMOND J EVISON

AI summary

A new cultivar of Clematis plant named ‘EviGsy154’ that is characterized by its numerous flowers that are large in size, its flowers that stay consistently dark red in color with contrasting yellow anthers, its repeat flowering; blooming from May through July and re-blooming in late August and September, its compact plant habit, its healthy and sturdy foliage with less tendency to have yellow lower leaves, and its good suitability for use in gardens and in containers.