Sign up for a Gertens Winter Workshop offered all season long. View Options: HERE.

Girls' Night Out is Back for the first three Wednesdays in November: Get tickets HERE. Space is limited!

Stock up on firewood HERE and save 10% with code STAYWARM

AgroSun T5 4' 6400k Bulb

In stock

Ready to purchase!
SKU
181045
View Store Map
  $39.99

Description

Hydrofarm's T5 replacement tubes offer HO light output at a great price.

Minnesota's Destination Garden Center

Gertens is one of North America’s largest garden centers and home to Minnesota’s largest selection of annuals, perennials, natives, houseplants, trees, shrubs, and evergreens.  We’ve been “Growing in the Grove” in Inver Grove Heights since 1921 and our campus now covers over 100 acres of shopping and growing facilities. Gertens is still a family-owned business with a focus on giving customers the ability to buy high-quality plants and trees directly from a local grower.  After all, IT'S ONLY NATURAL TO BUY FROM THE GROWER.

Open 7 Days a Week in Inver Grove Heights

Visit Our Garden Center

The Perfect Gift for the Gardener in Your Life!

Give the Gift of Gertens

Details

Hydrofarm's T5 replacement tubes offer HO light output at a great price. Full daylight 6400k spectrum, rated for 20,000 hours of life, and compatible for all T5 fixtures we offer. 54W puts out 5000 initial lumens per tube, 24W puts out 2000 initial lumens per tube.

Product Questions (14)

Starting times will vary depending on the vegetable you are growing. Each seed packet will have specific sowing instructions for that type of vegetable. Some plants, such as tomatoes and peppers, should be started indoors, 6-8 weeks before the last frost...
The process of bringing seeds outside is called hardening off. Hardening off is generally done sometime after the seedling has two full sets of normal leaves. In Minnesota, you want to begin hardening off seedlings in late April/early May.  To ...
If you have a southern facing window with all day sun, you may grow seedlings in a windowsill. Be sure to rotate the seedlings frequently to ensure the plants do not lean heavily towards the sun. For more even results, use a grow light, positioned roughly...
Indoor lighting and supplement lighting are big topics. Fluorescent lights have been used to grow seedlings and must be within inches of the plants to be useful. The introduction of LED lights has improved the usefulness of grow lights dramatically. ...
We recommend using either high intensity T5 fluorescent bulbs, or LED grow lights. Both setups will produce excellent results. T5s are the typical grow light, are economical and come in frequencies that are helpful for plant development. LED technology...
Grow lights should be kept roughly 4-5” above the top of seedling leaves. If you are using very powerful LEDs, you could even keep them 8-10” away.
Grow lights should be used to mimic a natural sunlight cycle for plants. We recommend using them 12 hours a day, from roughly 7am to 7pm.  
A rough estimate for the last frost date here in zone 4b is the first week of May. This is not exact, as Minnesota weather can be variable, but it does help for plantings.
A variety of seedling trays exist for seed starting. If you are starting smaller seeds, a simple peat cell tray works great. However, the larger the seed, the larger the initial pot should be. If you are starting larger seeds indoors such as: sunflowers...
Do not start any type of fertilizer regime for young seedlings until they have at least two full sets of regular leaves. Start with a root stimulator, then after a month you may move on to a gentle, weak (half strength) water-based fertilizer. Remember...
Let the roots tell you when to transplant. When you begin to see the seedling’s root growing out of the bottom of their current pot, it is time to transplant up to something larger. We recommend using a 4” nursery pot to transplant most seedlings. In...
Gertens carries a wide variety of both spring and autumn planted bulbs. Spring planted bulbs, such as gladioli and dahlias, are best started indoors in early April, and planted outside once the soil temperatures are above 55 F. Autumn planted bulbs, ...
The big three tips are: 1) Staking and training 2) Feeding and watering and 3) Harvesting and enjoying. 1) Keeping plants trained and staked allows air circulation around crops and provides much-needed support for produce as it grows...
Gertens does carry an assortment of both perennials, as well as annual and perennial wildflower mixes. It is important to remember when growing perennials, that you will not get any flowers the first year of growth. It often takes a perennial 2-3 years...
loader
Loading...