Frequently Asked Questions – Window Sill Garden

Frequently Asked Questions – Window Sill Garden

Jun 30, 2018nate

Looking to start your own Windowsill Garden with Urban Leaf? This FAQ can likely answer any lingering questions you have. But if not, feel free to contact us any time – either by email ( or text ‘UrbanLeaf’ to 555888.


How long will it take for my plants to grow?


Your seeds should sprout within 2-10 days. You don’t have to do much for the first 4-6 weeks. Growth rates vary based on the kind of plant and the amount of light you give them (the more, the better), You should expect to have a harvestable quantity of leaves at around the 1.5 – 2 month mark.


How long does it last?


All our plants are edible – mostly culinary herbs. The leaves of most herbs taste better when they are young. Although still edible, as they get older the leaves get thicker and lose some flavor. For this reason, we’ve engineered the product to keep each plant alive for 5-6 months. At the end of this period, we recommend harvesting the entire plant, enjoying it with dinner or cocktails, and then starting over with tender, young seeds. It’s the circle of life.


Can I use my own seeds?


Although you could technically use other seeds, we do not recommend it. Here’s why:

  1. We only sell varieties of seeds that we know work well in our product. Not all plant varieties are suited to growing like this.
  2. Within each plant variety (for example ‘Thai Basil’), there are dozens of different strains. Some grow quickly, others slowly. Some grow tall, others wide. We’ve tested dozens of strains to find the ones that work best. You might get lucky and find one that works too, but you may also not.

Is it reusable?


Most parts are reusable, including:

  • The green plastic case. If you do decide to throw it out, it’s made of biodegradable plastic.
  • The seeds. We include far more seeds in each packet than you actually need. Save these somewhere cool and dry. You can can either plant them in soil outside or in our product again.


The non-reusable parts are the smart soil inserts. These contain only enough nutrients for one plant growth cycle. Cost-effective replacement inserts are available here.


What kind of bottles can I use?


We recommend dark brown or green glass bottles because they block out the frequencies of light that cause water to go bad. Please do not use clear bottles.

750 ml (i.e. a red wine bottles) is a great size – but we’ve also successfully grown plants in sizes ranging from 500 ml to 1.5 L. Just remember that the size of the bottle is directly proportional to amount of watering you’ll need to do. A bigger bottle = less work for you.

Check out our Top 5 Tips for finding the perfect bottle.


How do I add water?


To add water to the bottle, carefully pull the insert out, leaving the roots hanging in the bottle’s neck. Add room temperature tap water. Gently put the insert back in, being careful not to damage the roots. Place your plant back on its sunny windowsill.


What happens when it outgrows the bottle?


We designed this product to live its entire life in the bottle. When your plant outgrows the bottle, it’s likely past its prime already in terms of taste and flavor. If you do want to keep your plant alive longer for whatever reason, here are a few options:

  1. Relocation. Remove your plant from its bottle carefully so you don’t damage the roots and transfer it to soil – either indoors or out. Be mindful of potential environmental shocks to your plant. Try to give your plant a chance to adjust gradually. Remember that your plant has been enjoying a cushy indoor life until now where temps may have been climate-controlled. We recommend moving your plant to a pot of soil indoors initially and making the transition to outdoors gradually.
  2. Get a bigger bottle. One of the issues you’re likely to run into with an older plant is the size of the root structure. If you plan to keep your plant a long time and want it to stay in a bottle, we recommend a bottle with a wider neck so that it will be easier to remove the insert (and roots) for watering.
  3. Add nutrients. We enrich the smart soil that comes in our product with enough nutrients to last 5-6 months. After this, the leaves are likely to start looking paler and you may also notice some splotching. Plants cannot survive on water-alone, so you will need to add nutrients. A simple Amazon search for hydroponic nutrients will yield a bunch of options, but we do not recommend mixing different brands or types of nutrients. Flush out your bottle of all the old water/nutrients first, then add new water along with the new nutrients. This is definitely a more advanced step, so if you want a hand or some more tips, feel free to shoot us an email at


Where is it made?


Our products are 100% US made from eco-friendly materials. Both the plastic injection molding and the kit assembly is done in upstate New York. Our main manufacturing partner is Mid Hudson Works, located in Pougkeepsie NY. They are a non-profit organization that provides employment opportunities for people with disabilities.


Still got questions? We’d love to hear them. Shoot us an email at

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