Nepeta Cultivar Breeding for Compact Habit and Long Bloom

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Existing Catmint cultivars lack a combination of compact, dense habit, bright chartreuse-yellow foliage, large bluish-lavender flowers with purple spots, and a prolonged blooming season, which are stable across varying environmental conditions.

Innovation Solution

Development of Nepeta 'Lemon Purrfection', a new cultivar with a dense, rounded, and compact habit, bright chartreuse-yellow foliage, large bluish-lavender flowers with persistent mauve-colored calyces, and a prolonged blooming season from late spring to autumn frost, achieved through selective breeding and asexual propagation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If existing Catmint cultivars are used, then they have various foliage colors and flower characteristics, but they lack the specific combination of bright chartreuse-yellow foliage, large bluish-lavender flowers with purple spots, and prolonged blooming season

Engineering Contradiction:
Improvecombination of traitsVSAvoidaesthetic appeal
Core Design Contradiction:
Adaptability or versatilityVSQuantity of substance

Solution Approach 1:

The patent combines multiple desirable traits (bright chartreuse-yellow foliage, large bluish-lavender flowers with purple spots, prolonged blooming season, compact habit) into a single new cultivar Nepeta 'Lemon Purrfection', creating a unified plant that exhibits all these characteristics simultaneously rather than requiring multiple different cultivars

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The new cultivar exhibits distinct parameter changes compared to existing Catmint cultivars, including unique foliage color (bright chartreuse-yellow), specific flower characteristics (large bluish-lavender with purple spots), and extended flowering duration, representing optimized parameter combinations

Inventive Principle:
Principle #35Parameter changes

2Volume of moving object

If plants are bred for compact habit and dense foliage, then they occupy less space, but may have reduced flowering period or intensity

Engineering Contradiction:
Improveplant sizeVSAvoidblooming season
Core Design Contradiction:
Volume of moving objectVSDuration of action of moving object

Solution Approach 1:

The new cultivar achieves an optimized parameter combination where compact plant size (20-30 cm height, 30-50 cm spread) coexists with extended blooming duration (late spring to autumn frost), breaking the typical trade-off between plant size and flowering period

Inventive Principle:
Principle #35Parameter changes

3Duration of action of moving object

If plants are selected for early and long blooming season, then they provide extended color, but may compromise foliage color intensity or flower size

Engineering Contradiction:
Improveblooming seasonVSAvoidfoliage color brightness
Core Design Contradiction:
Duration of action of moving objectVSIllumination intensity

Solution Approach 1:

The cultivar maintains intense foliage color brightness (vibrant chartreuse-yellow) and large flower size (3-4 cm diameter) while achieving prolonged blooming from late spring through autumn frost, optimizing multiple parameters simultaneously

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentUSPP37243P2<i>Nepeta </i>plant named ‘Lemon Purrfection’
Publication Date: 2026.02.03 WALTERS GARDEN INC
  • USPP37243P2 patent drawing

AI summary

The new and distinct hardy perennial Nepeta plant named ‘Lemon Purrfection’ has a dense, compressed mound, with compact habit and arching to horizontal stems. The new plant begins flowers in late spring and continues and repeats until autumn frost without deadheading. The flowers are bluish-lavender with purple spots and persistent mauve calyces just above the complementing bright chartreuse-yellow, cordate, fragrant foliage. The new plant is useful in the landscape en masse, as an accent, or in containers to bring color and fragrance to a garden and attract butterflies and hummingbirds.