The Great Blue Lobelia (Lobelia siphilitica 'Great Blue'), is a hardy Cardinal Flower bearing tall, leafy spikes of clear blue flowers. These spikes make it the perfect back row plant in your perennial flower beds
Great Blue is a clump-forming perennial with upright leafy stems. It blooms from late summer to mid-autumn, and it bears dense spikes of light to bright blue tubular, two-lipped flowers with a more prominent lower lip; long-lasting blooms.
This perky perennial was made for your backyard pollinator gardens. It'll attract a plethora of curious butterflies and the tubular flowers might even have a hummingbird visitor or two.
Of course they can also be used near the back of your property to soften the woodland edges or use at the base of a water feature you've installed. No matter where you plant Great Blue, it'll look absolutely stunning.
The tall flower spikes can be clipped and bright indoors to complete a delightful bouquet. Place them in the kitchen or on the living room coffee table to freshen up your space.
This Cardinal Flower prefers deep, moist soil and should be fertilized every two weeks in spring and early summer to improve flowering. Plants may be trimmed as they die back in hot summers.
Oh let us count the ways you can use this wonderful wildflower. Fron front entryways to backyard patios, you'll want to order a Great Blue Lobelia quickly before they're all gone!
Nature Hills sells a large variety of plants with several options available. Plants are offered in both potted containers and as dormant bare root without soil. Here is a helpful resource to understand your options as you create a beautiful landscape with help from Nature Hills.
Ever wonder what a larger plant will mean for your landscape? Container Sizes are really all about the age of the plant!
Seasonally, Nature Hills offers hand selected, high quality bare root trees, shrubs and perennials. Bare root plants are sold by height from the top of the root system to the top of the plant. Plants may be taller than the height minimums.
Keep in mind, specific varieties and different growing conditions can affect the rate at which plants grow. Variations in size may occur.
|Young Plants to 18 Months|
|2"x2"x3"||Ranges from||.18 to .21 dry quarts / .198 to .23 dry liters in volume|
|4.5" Container||Equal to||.65 dry quart / .72 dry liter in volume|
|Sprinter Pot||Equal to||.63 dry quart / .69 dry liter in volume|
|4" Container||Ranges from||.31 to .87 / .35 to .96 dry liter in volume|
|6" Container||Equal to||1.4 dry quarts / 1.59 dry liters in volume|
|1 Quart||Equal to||1 dry quart / 1.1 dry liter in volume|
|5.5" Container||Equal to||1.89 of a dry quart / 2.08 dry liters in volume|
|4"x4"x5"||Ranges from||.8 to 1.1 dry quarts / .88 to 1.2 dry liters in volume|
|4"x4"x6"||Ranges from||1.0 to 1.3 dry quarts / 1.1 to 1.41 dry liters in volume|
|4"x4"x9"||Ranges from||1.1 to 2.1 dry quarts / 1.2 to 2.3 dry liters in volume|
|4"x4"x10"||Ranges from||1.7 to 2.3 dry quart / 1.87 to 2.53 dry liters in volume|
|Plants 18 Months - 2.5 Years Old|
|2 Quart||Equal to||2 dry quarts / 2.2 dry liters in volume|
|#1 Container||Ranges from||2.26 to 3.73 dry quarts / 2.49 to 4.11 dry liters in volume|
|5"x5"x12"||Equal to||3.5 to 4.3 dry quarts / 3.85 to 4.74 dry liters in volume|
|Plants 2 - 4 Years Old|
|#2 Container||Ranges from||1.19 to 1.76 dry gallons / 5.24 to 7.75 dry liters in volume|
|#3 Container||Ranges from||2.32 to 2.76 dry gallons / 10.22 to 12.16 dry liters in volume|
|Plants 3 - 5 Years Old|
|#5 Container||Ranges from||2.92 to 4.62 dry gallons / 12.86 to 20.35 dry liters in volume|
|#7 Container||Ranges from||5.98 to 6.08 dry gallons / 26.34 to 26.78 dry liters in volume|
Plant Sentry is designed to protect both consumers and the nursery trade from invasive plant pests and diseases. Sites that display the Plant Sentry protection badge are protected from consumers buying and nurseries shipping material carrying invasive pests and diseases.
This proprietary eCommerce software prevents the shipment of a restricted plant to each state. The Plant Sentry system includes a shipment certification program. The Plant Sentry Compliance Officer works closely with NatureHills.com and each nursery or fulfillment center to ensure only compliant plants are sold to customers.
Click Here to learn more
To obtain a more accurate shipment time-frame, simply enter your zip code in the “Find Your Growing Zone” box to the right. Our plants are grown all over the country and lead time on items may be different because of this. Once your order is placed, you will also receive the specific shipment time-frame information as part of your order confirmation. Once an item ships, you will receive shipment notification and tracking numbers, so you can follow along while your plant travels to your doorstep. We use FedEx, UPS, or USPS at our discretion.
At Nature Hills we handle, package and ship the products you order with the utmost care to ensure healthy delivery. Shipping and handling charges are calculated based on the tables below. Please note that some items include an additional handling surcharge, these will be noted on the item's product page.
Click here to see our full rates
|Brand||Nature Hills' Choice|
|Botanical Name||Lobelia siphilitica|
|Mature Height||2 - 3 feet|
|Mature Spread||18 - 24 inches|
|Sun Exposure||Full Sun, Partial Shade|
|Soil||Tolerates Wet Soil|
|Pruning Time||Early Spring|