Tissue: Permanent Crops
| Crop | Plant Part to Sample | Time of Sampling |
|---|---|---|
| Blueberries | Leaves – mid-shoot | April thru September |
| Citrus | Mature leaves from non-fruiting terminals (avoid recent flush) | July 15 to May 15 |
| Deciduous Fruit/Nut Trees (except those noted below) | Mature Leaves – from spurs | May thru September |
| Grapes | Petiole – opposite cluster Petiole Leaf blade – opposite cluster Leaf blade – young mature | Bloom Veraison April & June July thru Sept 15 |
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| Peaches & Nectarines | Leaves – mid-shoot from current season’s growth | April 15 thru Sept 15 |
| Pistachios | Young, mature leaves from non-fruiting terminals | May thru August |
| Walnuts & Pecans | Terminal leaflet of compound leaf | |