Hosta Bright Star Variegated Leaf Thickness and Scape Strength

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Solution Overview

Problem

There is a need for a new and distinct cultivar of Hosta plants that exhibits unique foliage and flowering characteristics, offering improved garden performance and adaptability to varying environmental conditions, while differing from existing varieties like 'Dark Star' and 'Great Escape' in leaf color and growth habit.

Innovation Solution

The 'Bright Star' Hosta hybrid, a naturally occurring mutation of 'Dark Star', features upright to spreading foliage, thick dark green and white variegated leaves, light purple flowers, and strong scapes, propagated through divisions, demonstrating stability and distinctiveness in controlled nursery environments.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Shape

If leaf variegation is enhanced with broader white edges, then visual appeal is improved, but leaf thickness and structural robustness deteriorate

Engineering Contradiction:

Improveleaf variegation patternVSAvoidleaf thickness

Core Design Contradiction:

ShapeVSStrength

Solution Approach 1:

The patent applies local quality by creating distinct zones within the leaf structure: the central region maintains dark green coloration and thicker tissue for structural strength, while the marginal regions exhibit white variegation for visual appeal. This spatial differentiation of properties resolves the contradiction between aesthetic variegation and structural robustness.

Inventive Principle:

Principle #3Local quality

2Area of stationary object

If plant growth is allowed to spread broadly, then foliage coverage is improved, but plant upright structure and flower scape strength deteriorate

Engineering Contradiction:

Improvefoliage coverage areaVSAvoidflower scape strength

Core Design Contradiction:

Area of stationary objectVSStrength

Solution Approach 1:

The patent employs dynamics by creating a growth pattern that is adaptable and balanced - the foliage exhibits a tendency to spread outward while maintaining upright orientation through natural growth regulation. The plant dynamically adjusts its growth distribution to maintain both coverage area and structural integrity, preventing excessive lateral spreading that would compromise scape strength.

Inventive Principle:

Principle #15Dynamics

3Use of energy by moving object

If leaves are grown thinner for better light penetration, then photosynthesis efficiency is improved, but leaf durability and resistance to environmental stress deteriorate

Engineering Contradiction:

Improvephotosynthesis efficiencyVSAvoidleaf durability

Core Design Contradiction:

Use of energy by moving objectVSReliability

Solution Approach 1:

The patent applies local quality by creating a gradient in leaf thickness: the central region maintains adequate thickness for structural support and stress resistance, while the marginal regions with white variegation have reduced thickness that allows sufficient light penetration for photosynthesis. This spatial variation in tissue density resolves the contradiction between photosynthetic efficiency and leaf durability.

Inventive Principle:

Principle #3Local quality

Data Source

PatentUSPP25231P2<i>Hosta </i>plant named ‘Bright Star’

Publication Date: 2015.01.13 VAN DEN TOP HENDRIK JAN

AI summary

A new and distinct cultivar of Hosta plant named ‘Bright Star’, characterized by its upright to outwardly spreading foliage with upright flower scapes; thick, dark green and white variegated leaves; light purple-colored flowers that are positioned above the foliar plane on strong scapes; and good garden performance.