Drainage Most of the species in the Gratis Garden Trees program are adapted to the full range of soil types found in Pacific Palisades – from clay to loamy to sandy– but there are a few that would fail to thrive in poorly-draining/clay soil, so they should be avoided in some locations: Afrocarpus falcatus: clay to loamy to sandy Agonis flexuosa : clay to loamy to sandy Albizia julibrissin: clay to loamy to sandy Bauhinia variegata: loamy to sandy Cassia leptophylla: loamy to sandy Cedrus deodara: clay to loamy to sandy Cercis canadensis: clay to loamy to sandy Eriobotrya deflexa: clay to loamy to sandy Geijera parviflora: clay to loamy to sandy Handroanthus heptaphyllus: clay to loamy to sandy Jacaranda mimosifolia: loamy to sandy Koelreuteria bipinnata: clay to loamy to sandy Lagerstroemia indica: clay to loamy to sandy Laurus nobilis: clay to loamy to sandy Lophostemon confertus: clay to loamy to sandy Olea europaea: clay to loamy to sandy Photinia fraseri: clay to loamy to sandy Pinus canariensis: loamy to sandy Pinus halepensis: clay to loamy to sandy Pinus pinea: loamy to sandy Pistacia chinensis: clay to loamy to sandy Prosopis glandulosa torreyana: loamy to sandy Prunus caroliniana: clay to loamy to sandy Quercus agrifolia: clay to loamy to sandy Searsia lancea: clay to loamy to sandy Tipuana tipu: clay to loamy to sandy Ulmus parvifolia 'Drake': clay to loamy to sandy