diff --git a/src/rtgs_lab_tools/agricultural_modeling/__init__.py b/src/rtgs_lab_tools/agricultural_modeling/__init__.py
index 99de75d4..b7610634 100644
--- a/src/rtgs_lab_tools/agricultural_modeling/__init__.py
+++ b/src/rtgs_lab_tools/agricultural_modeling/__init__.py
@@ -11,31 +11,101 @@
 Migrated from rtgsET library.
 """
 
-from .crop_parameters import get_crop_names, get_crop_parameters, get_crop_status
-from .distance_speed import (
-    degrees_to_radians,
-    feet_to_meters,
-    meters_per_second_to_miles_per_hour,
-    miles_per_hour_to_meters_per_second,
-)
-from .evapotranspiration import (
-    calculate_reference_et,
-    get_required_columns,
-    validate_input_data,
-)
-from .growing_degree_days import (
-    calculate_corn_heat_units,
-    calculate_gdd_modified,
-    calculate_gdd_original,
-)
-from .temperature import celsius_to_fahrenheit, fahrenheit_to_celsius
-from .weather_api import (
-    check_missing_dates,
-    date_chunks,
-    fetch_weather_data,
-    validate_coordinates,
-    validate_date_range,
-)
+# Heavy dependencies are imported lazily when needed
+# This prevents long load times for simple commands like 'rtgs --help'
+
+
+def __getattr__(name):
+    """Lazy loading of heavy dependencies"""
+    # Crop parameters
+    if name == "get_crop_names":
+        from .crop_parameters import get_crop_names
+
+        return get_crop_names
+    elif name == "get_crop_parameters":
+        from .crop_parameters import get_crop_parameters
+
+        return get_crop_parameters
+    elif name == "get_crop_status":
+        from .crop_parameters import get_crop_status
+
+        return get_crop_status
+    # Distance and speed conversions
+    elif name == "degrees_to_radians":
+        from .distance_speed import degrees_to_radians
+
+        return degrees_to_radians
+    elif name == "feet_to_meters":
+        from .distance_speed import feet_to_meters
+
+        return feet_to_meters
+    elif name == "meters_per_second_to_miles_per_hour":
+        from .distance_speed import meters_per_second_to_miles_per_hour
+
+        return meters_per_second_to_miles_per_hour
+    elif name == "miles_per_hour_to_meters_per_second":
+        from .distance_speed import miles_per_hour_to_meters_per_second
+
+        return miles_per_hour_to_meters_per_second
+    # Evapotranspiration (heavy numpy/pandas dependencies)
+    elif name == "calculate_reference_et":
+        from .evapotranspiration import calculate_reference_et
+
+        return calculate_reference_et
+    elif name == "get_required_columns":
+        from .evapotranspiration import get_required_columns
+
+        return get_required_columns
+    elif name == "validate_input_data":
+        from .evapotranspiration import validate_input_data
+
+        return validate_input_data
+    # Growing degree days
+    elif name == "calculate_corn_heat_units":
+        from .growing_degree_days import calculate_corn_heat_units
+
+        return calculate_corn_heat_units
+    elif name == "calculate_gdd_modified":
+        from .growing_degree_days import calculate_gdd_modified
+
+        return calculate_gdd_modified
+    elif name == "calculate_gdd_original":
+        from .growing_degree_days import calculate_gdd_original
+
+        return calculate_gdd_original
+    # Temperature conversions (lightweight)
+    elif name == "celsius_to_fahrenheit":
+        from .temperature import celsius_to_fahrenheit
+
+        return celsius_to_fahrenheit
+    elif name == "fahrenheit_to_celsius":
+        from .temperature import fahrenheit_to_celsius
+
+        return fahrenheit_to_celsius
+    # Weather API utilities (requests dependency)
+    elif name == "check_missing_dates":
+        from .weather_api import check_missing_dates
+
+        return check_missing_dates
+    elif name == "date_chunks":
+        from .weather_api import date_chunks
+
+        return date_chunks
+    elif name == "fetch_weather_data":
+        from .weather_api import fetch_weather_data
+
+        return fetch_weather_data
+    elif name == "validate_coordinates":
+        from .weather_api import validate_coordinates
+
+        return validate_coordinates
+    elif name == "validate_date_range":
+        from .weather_api import validate_date_range
+
+        return validate_date_range
+    else:
+        raise AttributeError(f"module '{__name__}' has no attribute '{name}'")
+
 
 __all__ = [
     # Temperature conversions
diff --git a/src/rtgs_lab_tools/data_parser/__init__.py b/src/rtgs_lab_tools/data_parser/__init__.py
index a7dd6b0d..8b15f3d8 100644
--- a/src/rtgs_lab_tools/data_parser/__init__.py
+++ b/src/rtgs_lab_tools/data_parser/__init__.py
@@ -1,5 +1,17 @@
 """Universal JSON packet parser for historical packets based on device JSON schema tool for RTGS Lab Tools."""
 
-from .core import parse_gems_data
+# Heavy dependencies are imported lazily when needed
+# This prevents long load times for simple commands like 'rtgs --help'
+
+
+def __getattr__(name):
+    """Lazy loading of heavy dependencies"""
+    if name == "parse_gems_data":
+        from .core import parse_gems_data
+
+        return parse_gems_data
+    else:
+        raise AttributeError(f"module '{__name__}' has no attribute '{name}'")
+
 
 __all__ = ["parse_gems_data"]
diff --git a/src/rtgs_lab_tools/device_configuration/__init__.py b/src/rtgs_lab_tools/device_configuration/__init__.py
index 859ea1f9..a9818250 100644
--- a/src/rtgs_lab_tools/device_configuration/__init__.py
+++ b/src/rtgs_lab_tools/device_configuration/__init__.py
@@ -1,7 +1,25 @@
 """Device configuration management tools for RTGS Lab Tools."""
 
-from .cli import device_configuration_cli
-from .particle_client import ParticleClient
-from .update_configuration import ParticleConfigUpdater
+# Heavy dependencies are imported lazily when needed
+# This prevents long load times for simple commands like 'rtgs --help'
+
+
+def __getattr__(name):
+    """Lazy loading of heavy dependencies"""
+    if name == "device_configuration_cli":
+        from .cli import device_configuration_cli
+
+        return device_configuration_cli
+    elif name == "ParticleClient":
+        from .particle_client import ParticleClient
+
+        return ParticleClient
+    elif name == "ParticleConfigUpdater":
+        from .update_configuration import ParticleConfigUpdater
+
+        return ParticleConfigUpdater
+    else:
+        raise AttributeError(f"module '{__name__}' has no attribute '{name}'")
+
 
 __all__ = ["device_configuration_cli", "ParticleConfigUpdater", "ParticleClient"]
diff --git a/src/rtgs_lab_tools/gridded_data/__init__.py b/src/rtgs_lab_tools/gridded_data/__init__.py
index 5fba05e8..ed498048 100644
--- a/src/rtgs_lab_tools/gridded_data/__init__.py
+++ b/src/rtgs_lab_tools/gridded_data/__init__.py
@@ -1,10 +1,57 @@
 """Gridded climate data access tools for RTGS Lab Tools."""
 
-# Import sources for immediate availability
-from .utils import sources
+# Only import lightweight utilities immediately
+from .utils import load_roi_json, sources
+
+# Heavy dependencies are imported lazily when needed
+# This prevents long load times for simple commands like 'rtgs --help'
+
+
+def __getattr__(name):
+    """Lazy loading of heavy dependencies"""
+    if name == "init_ee":
+        from .gee import init_ee
+
+        return init_ee
+    elif name == "list_GEE_vars":
+        from .gee import list_GEE_vars
+
+        return list_GEE_vars
+    elif name == "load_roi":
+        from .gee import load_roi
+
+        return load_roi
+    elif name == "search_images":
+        from .gee import search_images
+
+        return search_images
+    elif name == "download_GEE_point":
+        from .gee import download_GEE_point
+
+        return download_GEE_point
+    elif name == "download_GEE_raster":
+        from .gee import download_GEE_raster
+
+        return download_GEE_raster
+    elif name == "quick_search":
+        from .planet import quick_search
+
+        return quick_search
+    elif name == "download_scenes":
+        from .planet import download_scenes
+
+        return download_scenes
+    elif name == "download_clipped_scenes":
+        from .planet import download_clipped_scenes
+
+        return download_clipped_scenes
+    elif name == "extract_time_series":
+        from .processors import extract_time_series
+
+        return extract_time_series
+    else:
+        raise AttributeError(f"module '{__name__}' has no attribute '{name}'")
 
-# Empty __init__.py to avoid loading heavy dependencies at import time
-# Functions are imported directly from submodules when needed
 
 __all__ = [
     "download_GEE_raster",
diff --git a/src/rtgs_lab_tools/gridded_data/cli.py b/src/rtgs_lab_tools/gridded_data/cli.py
index bed2aae2..ce9aa9e9 100644
--- a/src/rtgs_lab_tools/gridded_data/cli.py
+++ b/src/rtgs_lab_tools/gridded_data/cli.py
@@ -67,11 +67,11 @@ def download_clipped_scenes(
     cli_ctx.setup("download-scenes", verbose, log_file, no_postgres_log)
 
     try:
-        from ..gridded_data import download_clipped_scenes, load_roi
+        from ..gridded_data import download_clipped_scenes, load_roi_json
 
-        # Load ROI from file
+        # Load ROI from file (Planet Labs doesn't use Earth Engine)
         if roi:
-            roi = load_roi(roi).getInfo()
+            roi = load_roi_json(roi)
 
         download_clipped_scenes(
             source=source,
@@ -79,7 +79,7 @@ def download_clipped_scenes(
             roi=roi,
             start_date=start_date,
             end_date=end_date,
-            clouds=clouds,
+            clouds=int(clouds) if clouds else None,
             out_dir=out_dir,
         )
 
@@ -141,11 +141,11 @@ def download_scenes(
     cli_ctx.setup("download-scenes", verbose, log_file, no_postgres_log)
 
     try:
-        from ..gridded_data import download_scenes, load_roi
+        from ..gridded_data import download_scenes, load_roi_json
 
-        # Load ROI from file
+        # Load ROI from file (Planet Labs doesn't use Earth Engine)
         if roi:
-            roi = load_roi(roi).getInfo()
+            roi = load_roi_json(roi)
 
         download_scenes(
             source=source,
@@ -153,7 +153,7 @@ def download_scenes(
             roi=roi,
             start_date=start_date,
             end_date=end_date,
-            clouds=clouds,
+            clouds=int(clouds) if clouds else None,
             out_dir=out_dir,
         )
 
@@ -211,11 +211,11 @@ def planet_search(
     cli_ctx.setup("planet-search", verbose, log_file, no_postgres_log)
 
     try:
-        from ..gridded_data import load_roi, quick_search
+        from ..gridded_data import load_roi_json, quick_search
 
-        # Load ROI from file
+        # Load ROI from file (Planet Labs doesn't use Earth Engine)
         if roi:
-            roi = load_roi(roi).getInfo()
+            roi = load_roi_json(roi)
         # print(roi_bounds)
 
         quick_search(
@@ -223,7 +223,7 @@ def planet_search(
             roi=roi,
             start_date=start_date,
             end_date=end_date,
-            clouds=clouds,
+            clouds=int(clouds) if clouds else None,
             out_dir=out_dir,
         )
 
diff --git a/src/rtgs_lab_tools/gridded_data/gee.py b/src/rtgs_lab_tools/gridded_data/gee.py
index b76a4c23..3452403e 100644
--- a/src/rtgs_lab_tools/gridded_data/gee.py
+++ b/src/rtgs_lab_tools/gridded_data/gee.py
@@ -198,6 +198,10 @@ def download_GEE_point(name, source, bands, roi, start_date, end_date, out_dir):
     size = collection.size().getInfo()
     print(f"Found {size} images to process")
 
+    if size == 0:
+        print("No images found for the specified date range and location")
+        return None
+
     scale = collection.first().select(bands[0]).projection().nominalScale().getInfo()
 
     os.makedirs(out_dir, exist_ok=True)
@@ -245,6 +249,7 @@ def clip_img(img):
 
     roi = roi.geometry()
 
+    qa_band = None  # Initialize qa_band for climate datasets
     if name in qa_bands.keys():
         qa_band = qa_bands[name]
 
diff --git a/src/rtgs_lab_tools/gridded_data/utils.py b/src/rtgs_lab_tools/gridded_data/utils.py
index 6c22b097..9fdba1d2 100644
--- a/src/rtgs_lab_tools/gridded_data/utils.py
+++ b/src/rtgs_lab_tools/gridded_data/utils.py
@@ -21,3 +21,14 @@
     "MYD": "state_1km",  # Aqua
     "VIIRS": "QF1",
 }
+
+
+def load_roi_json(path):
+    """Load ROI as plain JSON for Planet Labs (no Earth Engine)"""
+    import json
+
+    with open(path) as f:
+        roi_geom = json.load(f)
+
+    # Convert to format Planet Labs functions expect
+    return {"features": [{"geometry": roi_geom}]}
diff --git a/src/rtgs_lab_tools/sensing_data/__init__.py b/src/rtgs_lab_tools/sensing_data/__init__.py
index 7372f4b4..05b04a94 100644
--- a/src/rtgs_lab_tools/sensing_data/__init__.py
+++ b/src/rtgs_lab_tools/sensing_data/__init__.py
@@ -1,13 +1,42 @@
 """Sensing data tools for RTGS Lab Tools."""
 
-from .data_extractor import (
-    extract_data,
-    get_nodes_for_project,
-    get_raw_data,
-    list_available_projects,
-    list_projects,
-)
-from .file_operations import create_zip_archive, save_data
+# Heavy dependencies are imported lazily when needed
+# This prevents long load times for simple commands like 'rtgs --help'
+
+
+def __getattr__(name):
+    """Lazy loading of heavy dependencies"""
+    if name == "extract_data":
+        from .data_extractor import extract_data
+
+        return extract_data
+    elif name == "get_nodes_for_project":
+        from .data_extractor import get_nodes_for_project
+
+        return get_nodes_for_project
+    elif name == "get_raw_data":
+        from .data_extractor import get_raw_data
+
+        return get_raw_data
+    elif name == "list_available_projects":
+        from .data_extractor import list_available_projects
+
+        return list_available_projects
+    elif name == "list_projects":
+        from .data_extractor import list_projects
+
+        return list_projects
+    elif name == "create_zip_archive":
+        from .file_operations import create_zip_archive
+
+        return create_zip_archive
+    elif name == "save_data":
+        from .file_operations import save_data
+
+        return save_data
+    else:
+        raise AttributeError(f"module '{__name__}' has no attribute '{name}'")
+
 
 __all__ = [
     "extract_data",
diff --git a/src/rtgs_lab_tools/visualization/__init__.py b/src/rtgs_lab_tools/visualization/__init__.py
index 792f3443..1b2a2f07 100644
--- a/src/rtgs_lab_tools/visualization/__init__.py
+++ b/src/rtgs_lab_tools/visualization/__init__.py
@@ -1,15 +1,38 @@
 """Visualization tools for RTGS Lab Tools."""
 
-from .data_utils import (
-    detect_data_type,
-    get_available_measurements,
-    load_and_prepare_data,
-)
-from .time_series import (
-    create_multi_parameter_plot,
-    create_time_series_plot,
-    plot_sensor_data,
-)
+# Heavy dependencies are imported lazily when needed
+# This prevents long load times for simple commands like 'rtgs --help'
+
+
+def __getattr__(name):
+    """Lazy loading of heavy dependencies"""
+    if name == "create_time_series_plot":
+        from .time_series import create_time_series_plot
+
+        return create_time_series_plot
+    elif name == "create_multi_parameter_plot":
+        from .time_series import create_multi_parameter_plot
+
+        return create_multi_parameter_plot
+    elif name == "plot_sensor_data":
+        from .time_series import plot_sensor_data
+
+        return plot_sensor_data
+    elif name == "detect_data_type":
+        from .data_utils import detect_data_type
+
+        return detect_data_type
+    elif name == "get_available_measurements":
+        from .data_utils import get_available_measurements
+
+        return get_available_measurements
+    elif name == "load_and_prepare_data":
+        from .data_utils import load_and_prepare_data
+
+        return load_and_prepare_data
+    else:
+        raise AttributeError(f"module '{__name__}' has no attribute '{name}'")
+
 
 __all__ = [
     "create_time_series_plot",