Hydrangea Haas Halo Large Lace-Cap Inflorescence Stem Strength

Solution Overview

Problem

Current Hydrangea arborescens cultivars lack large, sturdy inflorescences and long-lasting dried flowers, with 'Dardom' having smaller inflorescences and weaker stems, and 'Annabelle' lacking lace-cap type inflorescences and leathery foliage.

Innovation Solution

The new cultivar 'Haas' Halo features large lace-cap type inflorescences, strong stems, and long-lasting dried flowers, with stable propagation through softwood stem cuttings, distinguishing it from existing cultivars like 'Dardom' and 'Annabelle'.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Area of moving object

If Hydrangea cultivars have large inflorescences, then the visual appeal is improved, but the stem strength becomes insufficient to support them

Engineering Contradiction:

Improveinflorescence sizeVSAvoidstem strength

Core Design Contradiction:

Area of moving objectVSStrength

Solution Approach 1:

The inflorescence is segmented into two distinct types of florets: sterile florets that form the large visual display (35 cm diameter) and fertile florets at the center. This segmentation allows the plant to achieve large inflorescence size while distributing the structural load differently across the inflorescence architecture, reducing stress on individual stems.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent applies local quality by creating regions of different floret types within the inflorescence - the outer sterile florets provide visual appeal with their large size, while the central fertile florets provide structural anchoring. This localized differentiation allows the inflorescence to simultaneously achieve large size and maintain structural integrity through stronger central support.

Inventive Principle:

Principle #3Local quality

2Shape

If Hydrangea cultivars have lace-cap type inflorescences, then the aesthetic value is improved, but the foliage becomes lighter and less leathery

Engineering Contradiction:

Improveinflorescence typeVSAvoidfoliage quality

Core Design Contradiction:

ShapeVSStrength

Solution Approach 1:

The patent applies local quality by creating regions of different floret types within the inflorescence - the outer sterile florets provide visual appeal with their large size, while the central fertile florets provide structural anchoring. This localized differentiation allows the inflorescence to simultaneously achieve large size and maintain structural integrity through stronger central support.

Inventive Principle:

Principle #3Local quality

3Area of moving object

If Hydrangea cultivars have large sterile florets, then the visual display is improved, but the number of fertile florets is reduced

Engineering Contradiction:

Improvesterile floret sizeVSAvoidfertile floret number

Core Design Contradiction:

Area of moving objectVSQuantity of substance

Solution Approach 1:

The inflorescence is segmented into two distinct types of florets: sterile florets that form the large visual display (35 cm diameter) and fertile florets at the center. This segmentation allows the plant to achieve large inflorescence size while distributing the structural load differently across the inflorescence architecture, reducing stress on individual stems.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent employs partial action by producing approximately 50 large sterile florets per inflorescence that provide visual appeal, while also maintaining a substantial number of fertile florets (approximately 475 per inflorescence) that ensure reproductive success. Both functions are fulfilled to sufficient degrees without one completely dominating the other.

Inventive Principle:

Principle #16Partial or excessive action

Data Source

PatentUSPP24783P2Hydrangea plant named `Haas' Halo`

Publication Date: 2014.08.19 PLANTS NOUVEAU LLC

AI summary

A new cultivar of Hydrangea arborescens named ‘Haas' Halo’ that is characterized by its very large lace-cap type inflorescences with 50 large sterile florets per inflorescence, its upright plant habit, its strong sturdy stems with the ability to hold up its large inflorescences and its dried flowers after blooming that are present for up to 6 months.