Gemo St Johns Wort

Availability: Out of stock

Fantastic Flowers Gemo St. John's Wort Yellow

  • Small, Bright Yellow Flowers
  • Profuse Bloomer All Summer and Well Into Fall
  • Blooms All Summer
  • Refined Foliage Resembles Willow
  • Stays Compact
  • Beautifully Bushy Low Hedges
  • Fun Cut Flowers
  • Mounding, Flowering Groundcover
  • Widely Adaptable
  • Grows in Full Sun or Partial Shade
  • Can Be Grown in Containers
  • Road Salt-Tolerant

Looking for a cheerful plant to use throughout your garden? The ever-popular St. John's Wort Gemo (Hypericum kalmianum 'Gemo') is a top seller in Europe and would do very well in your landscape.

This compact, rounded shrub is covered in bright-yellow flowers at the end of the branches. Each bloom features five, wide-open petals.

Look closely in the center, and you'll see many erect, bushy stamens that add a fun dimensional effect to each flower. These buttercup-shaped blooms look like a glowing yellow star around showy pom-poms!

Gemo St. John's Wort is a wonderfully profuse variety that blooms from July until September. They will keep you smiling.

Don't you just love it when a plant delivers so much interest, over such a long period of time? You get your money's worth with Gemo St. John's Wort.

In the growing season, the shiny foliage looks just like willow leaves. It's very attractive in its own right, even before the blooms start their show.

With a bushy,multi-stemmed branch structure, Gemo looks great all year-long. The leaves are held densely from top to bottom of the shrub and look lush and full.

This easy-care flower factory can be grown across much of the United states. It performs beautifully in full sun, but can also handle a bit of shade through the day.

It's also a versatile plant that stays nice and small. You'll find many places to use it, including in seasonal outdoor containers.

Wherever you plant it, Gemo St. John will have people stopping and staring. Those unique blooms are a real standout in the garden. Order yours today!

How to Use Gemo St.John's Wort in the Landscape

Boost your curb appeal with a pair of outdoor containers flanking either side of your front door. Even if you are renting, these long-blooming plants can decorate your deck, balcony, patio or porch when grown in pots.

These tidy, little yellow-blooming shrubs can be used as a backdrop in a perennial garden. Partner behind Daylilies for a very low-maintenance, modern planting that looks incredible.

Create a small hedge by planting them 18 inches apart on center. You'll measure from the center of one to the center of the next.

Add them to the edge of your planting beds. It can also become a helpful "facer" plant for leggy shrubs, or perennials with bare lower stems.

They are especially useful when used on the east or south side of a shrub border. Try this with mature evergreen trees that frankly, need a little perk-me-up.

Honey bees, butterflies and beneficial pollinators love the fun and funky blooms. Gemo St. John's Wort makes a wonderful contrast in terms of growth habit, color and flower shape to Butterfly Garden host plants like Swamp Milkweed.

Add a row to your Herb Garden, or plant in large containers at the corners of your Victory Garden. You'll help pollination during the coveted "Second Summer" planting in your veggie patch.

This beautiful shrub can brighten up partially shaded areas in your landscape. Create long, irregular drifts along the sunny side of a woodland.

Line your walkways with a straight row of these happy bushes. Or, use in urban street plantings to lift the spirits of all who see it.

#ProPlantTips for Care

This personable shrub grows best in moist, well-drained soil. In other words, keep it watered on a regular basis, but make sure the roots don't sit for long in standing water.

Keep container plants well watered through the growing season. Apply a good drink before you turn off your sprinkler system for the winter.

Lightly prune to shape in early spring after you start seeing new growth. You can tip-prune during bloom time, but only if you bring the flowers inside for beautiful cut flower arrangements!

This is a good choice in areas with heavy deer pressure, as they don't prefer the taste. However, no plant will stand up to a hungry deer. Use deer repellent and reapply according to directions.

It easily tolerates urban conditions and road salt. Support the blooms with an application of organic, slow-release fertilizer in early spring, following instructions on the package.

Make your landscape "pop" with the bold blooms of Gemo St. John's Wort. Order today!

Buying Options for Plants

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.

  • Popular sizes of select trees are 1 foot, 2 feet, 3 feet, etc.
  • Popular sizes of select bare root plants is 1 foot, 18 inches, etc.

Nature Hills Container Size by Volume

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
Size Volume
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
Size Volume
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
Size Volume
#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
Size Volume
#5 Container Ranges from 2.92 to 4.62 dry gallons / 12.86 to 20.35 dry liters in volume
#6 Container Ranges from 5.25 to 6.01 dry gallons / 23.12 to 26.42 dry liters in volume
#7 Container Ranges from 5.98 to 6.08 dry gallons / 26.34 to 26.78 dry liters in volume

About Plant Sentry™

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 and each nursery or fulfillment center to ensure only compliant plants are sold to customers.

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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.

Due to winter weather we have put a hold on shipping to the areas shown below in grey. You can still order now and we will ship the plant to you during an appropriate time for your zone.

*If you have found your zone already, it will be highlighted in the table below.
Color Zone Times
3 Spring 2019
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Shipping Rates

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.

From To S&H
0 - 19.99 24.99
20 - 49.99 29.99
50 - 69.99 34.99
70 - 99.99 39.99
100 - 129.99 44.99
130 - 149.99 48.99
150 - 150+ Approx 28%

Click here to see our full rates


Gemo St Johns Wort Is Suited to Grow in Zones 5-9
Growing Zones 5-9
More Information
Brand Nature Hills' Choice
Botanical Name Hypericum kalmianum 'Gemo'
Type Deciduous
Mature Height 2 - 3 feet
Mature Spread 2 - 3 feet
Sun Exposure Full Sun
Soil Well Drained
Moisture Medium
Growth Rate Medium
Foliage Color Green
Pollinator Friendly Yes
Pruning Time Early Spring
Fragrant No