Hydrangea Cultivar With Compact Growth and Pink-to-White Blooms

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Solution Overview

Problem

Existing hydrangea cultivars lack improved growth habits and flowering capacity, particularly in terms of inflorescence color transition and compactness.

Innovation Solution

Development of the Hydrangea arborescens 'Dranbor3269' cultivar through cross-pollination, which exhibits light pink to almost white aging inflorescences and a compact, upright growth habit, achieved via asexual propagation by terminal stem cuttings.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If conventional hydrangea cultivars are used, then they have basic growth and flowering, but they lack improved growth habits and flowering capacity with slow color transition

Engineering Contradiction:

Improveflowering capacityVSAvoidcolor transition speed

Core Design Contradiction:

ProductivityVSDuration of action of moving object

Solution Approach 1:

The patent applies parameter changes by selecting and breeding plants with specific genetic traits that accelerate inflorescence color transition from pink to white. The new cultivar 'Dranbor3269' exhibits a faster color transition rate compared to parent cultivars, achieving the desired aesthetic effect in a shorter time frame while maintaining high flowering capacity

Inventive Principle:

Principle #35Parameter changes

2Shape

If conventional hydrangea cultivars are used, then they have standard growth habit, but they lack compact and upright growth habit

Engineering Contradiction:

Improvegrowth habit compactnessVSAvoidbreeding program complexity

Core Design Contradiction:

ShapeVSDevice complexity

Solution Approach 1:

The patent applies preliminary action by conducting controlled cross-pollination between selected parent cultivars ('NCHA1' and 'PIIHA-I') with known genetic traits for compact growth. The breeding program预先 identified and combined specific genetic markers associated with upright, compact growth habits in the new cultivar before commercial deployment

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent employs feedback mechanisms by evaluating progeny plants for desired growth habit characteristics and selectively propagating only those exhibiting the target compact, upright form. Multiple generations were screened and assessed to ensure stable inheritance of the improved growth habit traits

Inventive Principle:

Principle #23Feedback

3Quantity of substance

If parent cultivar NCHA1 is used, then it has pink inflorescences, but it lacks light pink color that ages to almost white with high floriferousness

Engineering Contradiction:

Improveinflorescence quantityVSAvoidinflorescence color

Core Design Contradiction:

Quantity of substanceVSShape

Solution Approach 1:

The patent applies merging by combining genetic traits from two parent cultivars: the light pink coloration and high floriferousness from 'NCHA1' with the compact growth habit from 'PIIHA-I'. The resulting cultivar 'Dranbor3269' merges these desirable traits, producing abundant light pink inflorescences that age to almost white while maintaining a compact form

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUSPP37212P2<i>Hydrangea </i>plant named ‘Dranbor3269’

Publication Date: 2026.01.13 CONARD PYLE CO

AI summary

A new and distinct cultivar of hydrangea plant, referred to by its cultivar name, ‘Dranbor3269’, is disclosed. The new variety forms, light pink-colored inflorescences which age from light pink to almost white. Sturdy stems which aid against flopping are formed. A compact, upright growth habit is displayed. The new variety is well suited for providing distinguished ornamentation in the landscape.