Starting seeds requires some planning, good conditions, and an organized growing space. Your 40 Foot Dome has enough room to set up trays, store potting supplies, raise young plants, and complete other gardening chores. When growing areas are set up properly, gardeners can easily manage seedlings and get ready for the next season.
Organizing a Seed Starting System
Creating an effective seed starting system makes it easier to separate varieties and care for trays on a daily basis. Temperatures, moisture levels, lighting, and airflow all affect seed germination and overall plant health. Planning your setup ensures that you can use your greenhouse space efficiently.
Select an Area to Start Seeds
Growers should first decide where they will set up their seed starting system. Keeping seed trays in the same space simplifies watering, labeling, and monitoring. It also allows growers to separate small seedlings from larger plants with different care requirements.
Find a convenient space with enough room to comfortably access your trays. Work areas shouldn’t block walkways or get in the way of typical greenhouse tasks.
Consider these elements when setting up a dedicated space for seedlings:
- Shelving for seed trays and smaller containers
- Work surface to fill trays and sow seeds
- Storage for labels, markers, and basic tools
- Watering equipment should be close by
- Space to transplant seedlings when the time comes
Seed starting areas can vary in size, but it’s best to start small. Growing only a few trays of seeds ensures that you can properly care for each one.
Organize Trays and Supplies
Growers who start several varieties of plants should keep their seed starting system organized. Different vegetables, herbs, and flowers may have unique needs. Sowing times, planting depths, and watering schedules will vary, so proper labels are essential.
Use trays or containers with good drainage holes. Clean containers out from previous years, especially if they held diseased plants. Fresh seed starting mix can give young roots a healthy environment to grow.
Label trays with the plant variety and date sown. Use this area to record transplant dates or any special care each crop may need.
Store commonly used supplies near your workspace. Seeds, labels, markers, and small tools should all be easily accessible without taking up growing space.
Temperature Conditions for Starting Seeds
Temperature greatly influences germination. Each crop has unique temperature preferences, so be sure to research your plants before spreading seeds.
Temperatures will naturally fluctuate in a greenhouse dome. Solar heating can warm up the interior during sunny days. Nighttime temperatures will drop unless your structure stays radiant during cooler periods.
Check both daytime and nighttime temperatures when growing seeds. Monitoring these levels will tell you if adjustments are needed to create ideal conditions for seedlings.
Install a thermometer at the height of your seedlings instead of using greenhouse temperature. Heat mats can help elevate temperatures if needed.
Seedlings should not be exposed to extreme heat. Dry conditions may occur when temperatures are too high, and germination could be affected. Use ventilation and temperature monitoring to ensure your seed starting area stays within a specific range for your plants.
Lighting and Airflow
Once seeds germinate, they will need adequate lighting to grow. Without enough light, seedlings become tall and leggy.
Position your trays to receive proper sunlight, and take note of how sunlight shifts throughout the day. If natural lighting is limited, install grow lights to supplement. Be sure to follow the manufacturer’s recommendations with height and time settings. Adjust as needed for your crops.
Air circulation is another important factor. Too little airflow can cause moisture to collect around seedlings and the growing surface. Leave space between trays for ventilation, and use vents when conditions demand it.
Avoid blasting trays with strong airflow. Keep air moving, but do not directly expose seedlings to powerful fans.
Watering Seedlings
Water is necessary for germination. However, too much water surrounding the seeds can cause a lack of oxygen and promote diseases like damping- off. Try to establish a consistent watering routine.
Check the growing medium’s moisture levels instead of watering on a set schedule. Some containers will dry out faster than others due to size, location, and sunlight exposure.
Water gently and avoid disturbing seeds or young seedlings. Bottom watering is acceptable if you can drain excess water away from the seeds. Remove any standing water that collects in trays below the containers.
Humidity domes are great for keeping moisture in during germination. Remove or open humidity domes once sprouts appear and airflow is necessary. Keep a close eye on moisture levels to prevent oversaturation of the seedlings.
Seed Starting Schedule
You can create a seed starting schedule to better manage sowing, germination, and transplanting times. For example, don’t feel the need to sow every crop all at once. Some seeds have different times for planting and preparation before they’re ready to transplant.
Begin by making a list of all the veggies, herbs, or flowers you want to grow. Note each crop’s recommended sowing dates and approximate days until transplanting. Organize your trays by expected germination and seedling growth.
Your schedule can be as simple as:
- Crop name and variety
- Date the seeds were sown
- Germination date
- Notes on watering or special care instructions
- Approximate date to transplant
Information from your schedule will allow you to start new seedlings when there is enough space. You can also track which crops do well under your growing conditions.
Preparing Seedlings to Transplant
Seedlings won’t immediately move into their outdoor garden beds or final position after germination. If your seedlings spent time inside a greenhouse, they may have a difficult time adjusting to direct sunlight, wind, or temperature fluctuations.
Gradually introduce seedlings to outdoor conditions by hardening them off over the course of several days up to two weeks. The time varies depending on your plants and environment. Begin by placing them outside for a short time each day, in a shaded location. Slowly introduce your plants to more direct sunlight and outdoor elements.
Before transplanting, ensure your seedlings are big enough to move and that their new garden area is prepared. Water seedlings before moving them, and take care not to rough up the root system.
Monitor new transplants for changes in leaf color, growth, and water requirements. These can help you determine if your seedlings are adjusting well to their new home.
Cleaning Your Seed Starting Area
Cleaning and organization are key to keeping your seed starting system running smoothly. Eliminate dead plant debris, clean pots and trays, and dispose of any seedlings affected by serious illness. Follow seed packet instructions on storing leftover seeds, and make sure your labels are easily read.
Refer to your planting schedule and records to identify what you can improve on for next year. Was planting spaced out enough? Did you water too much or too little? Checking your work helps you determine what worked and what needs improvement.
As your seedlings grow, move them into their own containers or another area of the greenhouse. This will prevent plants from staying in their seedling tray too long and free up space for new crops.
Learn more about greenhouse sizes, shapes, and accessories at Dome Greenhouses. Selecting the right greenhouse for your gardening needs can help you organize tasks like starting seeds.
Final Thoughts
Organized conditions, proper planning, and suitable temperatures allow for an easy to manage seed starting system. Your 40 foot greenhouse gives you the space you need to organize your seed trays, keep gardening supplies nearby, separate crop varieties, and prepare your seedlings for transplanting.
Managing temperature, lighting, moisture, and airflow helps you spend less time worrying and more time caring for your seedlings. Staying on top of your crop’s progress will allow you to make adjustments to your seed starting system as your plants grow.
FAQs
1. What tools should I use to start seeds?
All you need is trays or containers to start your seeds in, a seed starting mix, labels, and something to water your seedlings with. You’ll also need a clean area to work in. Other helpful tools include shelving, thermometers, and grow lights.
2. Where do I put seed trays in a 40 Foot Dome Greenhouse?
Seed trays should be placed in an area that you can easily access. They also need adequate light and airflow. Make sure your seed starting area doesn’t block any walkways and you leave enough room to comfortably water, inspect, and move seedlings.
3. How frequently should I water seedlings?
Every plant has different watering requirements. Container size also plays a role in how fast your growing medium dries out. Check your containers before watering on a set day or time period.
4. Do I need grow lights to start seeds in a greenhouse?
Grow lights aren’t necessary when starting your seedlings, but they can be helpful if your seedlings aren’t getting enough light to grow properly.
5. How can I prepare seedlings for transplanting outdoors?
You can prepare your seedlings by hardening them off over several days up to 2 weeks. The length of time will vary by your growing conditions and what you’re growing.
