Treatment group | Number of curbs |
---|---|

Parking edge distant | 0 |

Parking edge close | 1 |

Vegetation strip | |

>3 m | 2 |

1–3 m | 2 |

<1 m | 2 |

Dual tree narrow oval (>3:1 dimension ratio) | 2 |

Columnar knuckle, L and T | 3 if connected to larger soil zone |

Columnar knuckle, L and T | 4 if not connected to larger soil zone |

Triangulated knuckle | 3 if connected to larger soil zone |

Triangulated knuckle | 4 if not connected to larger soil zone |

Classic tree pit opening (<3:1 dimension ratio) | 4 |